SleepU 

Wrist Sleep Oxygen Monitor

Track oxygen levels and pulse rates overnight, sleep with peace of mind

  Patented Ring Sensor: allows your finger to move freely while staying securely in place

  Smart vibration when oxygen level drops below preset threshold

  The unit can store 4 sessions data (up to 10 hrs for each)

  Print & share free 4s interval oximetry reports

$159.00$169.00

*This device is for General Wellness use only and not intended for medical use. 

SleepU Wrist Sleep Oxygen Monitor

Track oxygen levels and pulse rates overnight, sleep with peace of mind

  Patented Ring Sensor: allows your finger to move freely while staying securely in place

  Smart vibration when oxygen level drops below preset threshold

  The unit can store 4 sessions data (up to 10 hrs for each)

  Print & share free 4s interval oximetry reports

$159.00$169.00

*This device is for General Wellness use only and not intended for medical use. 

Whole Night Continuous Sampling

16 hours for typical use|2.5 hours charging time

Blood Oxygen

Pulse Rate

Body Motion

Whole Night Continuous Sampling

16 hours for typical use|2.5 hours charging time

Blood Oxygen

Pulse Rate

Body Motion

Sleep Reports Capture Every SpO2 Drop Event

Monitoring your sleep at home has never been easier!

Export the detailed reports and get valuable insight into the patterns of your sleep. You can share unlimited sleep oximetry reports with your families or others.


*The image shows a PC Sleep Report, which can also be exported from the app.

Sleep Reports Capture Every SpO2 Drop Event

Monitoring your sleep at home has never been easier

Export the detailed reports and get valuable insight into the patterns of your sleep. You can share unlimited sleep oximetry reports with your families or others.
*The image shows a PC Sleep Report, which can also be exported from the app.

Adjustable Silent Vibration Prompt

The VIBRATION in the patented ring sensor will nudge you gently to change your sleep position when your blood oxygen level is below the preset value. The device uses silent vibrations rather than audible beeping, so it won't disturb your partner. Rolling onto your side (the recommended position) can help open your airway to breathe more oxygen. 

Effective at reducing the risk of low and unhealthy blood oxygen levels during sleep, this device serves as a safety net for CPAP failure. It also helps you assess the effectiveness of your CPAP machine or oxygen concentrator while providing additional insights.

other

  • slip off easily

  • Numb The Finger

  • 12-Hour Battery Life

  • No Reminder

  • No PC Software

Checkme™ O2

  • stay fixed in finger

  • comfortable sensor

  • 72-Hour Battery Life

  • SpO2/PR Reminder

  • App & PC Available

In Case You Need Extra Accessories

Adjustable Silent Vibration Prompt

The VIBRATION in the patented ring sensor will nudge you gently to change your sleep position when your blood oxygen level is below the preset value. The device uses silent vibrations rather than audible beeping, so it won't disturb your partner. Rolling onto your side (the recommended position) can help open your airway to breathe more oxygen. 

Effective at reducing the risk of low and unhealthy blood oxygen levels during sleep, this device serves as a safety net for CPAP failure. It also helps you assess the effectiveness of your CPAP machine or oxygen concentrator while providing additional insights.

Patented Ring Sensor 

Featuring a Flexible Component

Patented Ring Sensor

Featuring a Flexible Component

other

Duckbill Sensor

  • slip off easily

  • Finger is Restricted

  • Numb and Sweaty the Finger

  • no reminder

SleepU™

  • stay fixed in finger

  • Free the Finger to Move

  • Doesn't Fully Cover or Press the finger

  • Smart SpO2 Reminder

other

Duckbill Sensor

  • slip off easily

  • Finger is Restricted

  • Numb and Sweaty the Finger

  • no reminder

SleepU™

  • Stay Fixed in Finger

  • Free the Finger to Move

  • Doesn't Fully Cover or Press the finger

  • Smart SpO2 Reminder

Free app (integrated with Apple Health/Fitbit)

PC and Mac software

A Brand You Can Trust

High Resolution Charts


The app records an unlimited amount of data and provides high-resolution charts with data at 4-second intervals. You can annotate and export each data set for professional reference, making it crucial for capturing subtle physiological fluctuations for optimization.

Trend History Review

By reviewing weekly, monthly, and yearly data trends, you can easily see if your oxygen levels remain in a good range.
Meanwhile, it helps adjust your care and outcome trajectories, and rest assured your sleep health is in good hands.
A Brand You Can Trust
A Brand You Can Trust

Multi-User Management


Manage health information for up to 10 family members, add notes to each data set, all conveniently at your fingertips.

Free app (integrated with Apple Health/Fitbit)

PC and Mac software

A Brand You Can Trust

High Resolution Charts


The app records an unlimited amount of data and provides high-resolution charts with data at 4-second intervals. You can annotate and export each data set for professional reference, making it crucial for capturing subtle physiological fluctuations for optimization.

Trend History Review

By reviewing weekly, monthly, and yearly data trends, you can easily see if your oxygen levels remain in a good range.
Meanwhile, it helps adjust your care and outcome trajectories, and rest assured your sleep health is in good hands.
A Brand You Can Trust

Getting Started is Easy

Wear SleepU™

Whether you’re sleeping or working, no need to keep your phone handy. The device will automatically turn on and start monitoring.

Take It Off

Your recordings are automatically stored in SleepU™.

Sync Your Data

Easily sync data to the app and PC software for detailed analysis. Export and share reports in PDF, CSV, or Binary formats with others.

Getting Started is Easy

Wear SleepU™

Whether you’re sleeping or working, no need to keep your phone handy. The device will automatically turn on and start monitoring.

Take It Off

Your recordings are automatically stored in SleepU™.

Sync Your Data

Easily sync data to the app and PC software for detailed analysis. Export and share reports in PDF, CSV, or Binary formats with others.

Tech Specs

Weight

(Main Unit ith Band and Sensor)

1.09 oz / 31g


Device Dimensions

1.6'' x 0.9'' x 0.5''


Ring Perimeter

2.0'' - 3.0'' / 50-76mm


Wireless

Bluetooth 4.0 BLE 


Battery Life

Rechargeable lithium-polymer, 3.7 Vdc, 16 hours for typical use


Maximum Suitable Wrist Size

21 cm

Degree Of Dust & Water Resistance

IP22 


Recorded Parameters

Oxygen levels, pulse rate, motion


Built-in Memory

4 records, up to 10 hours for each 


Compatible Computer System

Windows 7 or later

macOS 10.15.3 or later


Works With

iOS: Version 9.0 or later, iPhone 4s/iPad 3 or later

Android: Version 5.0 or later, with Bluetooth 4.0 BLE

Oxygen Level Range

70% - 99%


SpO2 Accuracy (Arms)

80-99%: ±2%;70-79%: ±3%


Pulse Rate Range

30 to 250 bpm


PR Accuracy

±2bpm or ±2%, whichever is greater


Sampling Interval

1 second 


Display Interval In App

4 seconds 


Vibration

Triggered by low oxygen level

Tech Specs

Weight (Main Unit ith Band and Sensor)
1.09 oz / 31g

Oxygen Level Range
70% - 99%

SpO2 Accuracy (Arms)
80-99%: ±2%; 70-79%: ±3%

Pulse Rate Range
30 to 250 bpm

PR Accuracy
±2bpm or ±2%, whichever is greater

Recorded Parameters
Oxygen levels, pulse rate, motion

Ring Perimeter
2.0'' - 3.0'' / 50-76mm

Sampling Interval
1 second 

Battery Life
Rechargeable lithium-polymer, 3.7 Vdc, 16 hours for typical use

Degree Of Dust & Water Resistance
IP22

Device Dimensions
1.6'' x 0.9'' x 0.5''

Works With
iOS: Version 9.0 or later, iPhone 4s/iPad 3 or later
Android: Version 5.0 or later, with Bluetooth 4.0 BLE

Compatible Computer System
Windows 7 or later
macOS 10.15.3 or later

Display Interval In App
4 seconds

Wireless
Bluetooth 4.0 BLE 

Built-in Memory
4 records, up to 10 hours for each

Maximum Suitable Wrist Size
21 cm

In Case You Need Extra Accessories

Reviews, Q&A

Customer Reviews

Based on 168 reviews
80%
(134)
17%
(29)
2%
(3)
1%
(2)
0%
(0)
T
Thomas L.
Evaluation of SleepU

I have been searching for years to have a wireless monitor to record nocturnal SPO2 level in order to see how effective my CPAP machine is. This device satisfies my need so that I can adjust the air pressure settings to eliminate all drops and keep oxygen saturation about 95% consistently every night. For that I could have rated this product five stars.

However, I found several issues that should be corrected in both the APP and the hardware. The bottom trace that displays the motion artifact occurrences is hardly visible. A different color with much better contrast should be considered. Secondly, The heart rate "spikes" are almost always caused by artifacts as clearly shown in the spreadsheet data. Since the device has a motion sensor built-in the heart rate readings could be corrected as many fitness wearable devices have done. On the hardware side, 8 out of 10 times when I plug the device in for recharge I have to do it twice to activate the charging mode.

Besides the above I think this device is ideal for sleep study at home to diagnose sleep apnea disease. This can be included in a Sleep Study Kit the hospitals prescribe for the patients to do at home. The current unit price is very reasonable for that market. For consumer use it is too high unless the above issues be resolved and the heart rate reading be made more accurate. I hope both the firmware and the APP will be upgraded in the foreseeable future.

I do like the light weight and the sensor location. It is comfortable to wear and the SPO2 readings are accurate. This is the best part of the device. Very well designed. By the way, I turned off the vibration mode since I have no need of that feature.

R
Roger

I have sleep apnea and use a CPAP machine most of the time. I wanted a way to see how bad my spO2 levels would drop when not using the CPAP in different sleeping positions. This monitor worked very well and was easy to use. Excellent graphs on my IPhone. Was able to prove that by sleeping more upright I would have less apnea events, but demonstrated conclusively that I still need to use the CPAP.

R
Rich S.

I use a dental appliance for sleep apnea, but it's hard to know where to set it. Using symptoms such as daytime sleepiness is an extremely rough measure. Using the Wellue SPO2 monitor helped me figure out that my apnea wasn't being fully treated. It also pulses to keep the remaining few apnea events short. It doesn't usually wake me, but that's perfect. The vibration needn't wake you - if it keeps the amount of time under 90% low that's all you need and is less disruptive of sleep. I've been diagnosed with Meniere's, but it turned out that all I had was undertreated sleep apnea. I would not have been able to figure this out without using this device. Highly recommended for anyone with sleep apnea as a monitor and backup for whatever you use to control it.

D
Donna
Thank You!

This has been a lifesaver! Our doctor seems to have his protocol book for a brain with no room for anything but a CPAP solution. We've heard a lot about those and figured we'd try this, first. What an eye-opener for my husband! He didn't really believe my descriptions of his sleep problems. Now, it's not just me letting him know he has a problem and he can finally see exactly what's really happening when he thinks he's sleeping blissfully - he's not! Now, he's awakened when he stops breathing, but just enough to turn over and breathe himself back to sleep. Thank you, thank you, thank you! P.S. We bought a back-up - just in case something happens to this one.

M
Ms J.

ve had this monitor for a good few months now and I must say it really is an excellent piece of equipment. There was a few teething issues (mostly down to user error!) but the support from the manufacturer is the best I have come across in a long time, they are personable, trustworthy and efficient. The watch itself is easy to use and comfortable to wear, you can set the vibration intensity to your preferred setting and the o2 level to what you want it to be. The battery lasts for a good nights sleep (I've had it on for over 10 hours without issue), just make sure the app is not running on your phone as this can drain the battery life. The readings provide great evidence to consultants and you can sleep comfortably knowing that you will be gently woken if your o2 levels drop too low. If you are worried about your 02 levels at night (which is probably why you are reading this!) then I would not hesitate, definitely worth the money.

M
Matt

Easy to use and fascinatingly insightful results. My partner has been telling me that I frequently stop breathing in the night for a while now, so not wanting to jump straight to the CPAP machines I started looking for sleep monitoring instead. This looked like the most comfortable/reliable device and after using it for ~10 days I am very pleased with my choice!
The battery seems fine, some other reviewers had trouble but mine has lasted well. Longest session so far 9hrs 30mins. The app is very easy to use, the build quality is great/comfortable and the results for me have been very interesting.
In the first few days of use the device recorded many drops, some of which as low as the mid 80's (% SpO2) accompanied by huge heart rate spikes - the app clearly shows that I've been practically suffocating in my sleep! Over the following week I adjusted the vibration to a weaker setting, and the threshold to 91%, and this seems to be a sweet spot for me. I still get drops but my time below 90% is down to 0% and the vibration seems to be enough to nudge me to roll over without fully waking me up. Fewer heart rate spikes and nowhere near as high.
I'd certainly recommend this device for anyone who wants to analyse their sleep at home and the vibration on low O2 has clearly been working to keep me from suffocating so full marks from me!
Notes: the device emits a constant dim red light around the finger, that's how it measures your SpO2, it's not very bright. The screen is much brighter when you first put the device on but turns off after a minute or two. The device is quite easy to put on, the rubber strap has a couple of metal clasps that you just push through the holes on the other side. You can charge the device from your computers USB or
from a phone charger, it comes with an appropriate usb cable.

S
Steve B.
Ring Oximeter

Great product, easy to use, easy to understand and utilise. Used with a Down Syndrome adult who is unresponsive and difficult to work with. Product handled rough treatment and continual throwing very well, and provided very useful and meaningful data.

D
Douglas C.
Great sleep therapy product!

High-quality, comfortable, very useful sleep therapy product for monitoring and possibly mitigating effects of obstructive sleep apnea, snoring and tracking effects of sleep on sports and exercise performance. Provides accurate, reliable, multi-function data on ❤️ pulse rate, SP02 oxygen levels, provides gentle vibrating alarm when breathing drops below 4% and measures periods of restlessness. Also an excellent complement to Fitbit sports device.

T
Tom W.

It works as advertised. I really like the fact that if your oxygen level drops below 90 it vibrates and wakes you up. I have this happen almost every night.. Easy to use and it works well with my phone app. You do need to be sure to unplug it from the charger when you connect with blue tooth. It doesn't seem to be able to do both. Also I have had trouble connecting it to my PC. Overall I would say it's very well designed (comfortable) and it does a great job.

G
Gary
SleepU Oxi

Best device out of 3 that I purchased online. PC reports are excellent. Phone app looks good as well but I prefer the detail of PC report. This device vibrates for low oxygen levels. User can set vibration level. I wish the device could also vibrate on low heart rates. Everyone should use this device periodically, even if they don't think they have sleep apnea. I have sleep apnea and it has ravaged my health. Usually this device is purchased to track oxygen levels but don't overlook the importance of evaluating your heart rate at night too! This is a great device.

Regulatory & Compliance

Laser medium: GaAIAs Semiconductor
Laser wavelength: 650nm±20nm / 808nm±20nm
Number of laser diodes: 6×808nm laser diodes, 6×650nm laser diodes
Maximum output power per 808nm laser diode: 150mW±20%
Maximum output power per 650nm laser diode: 5mW+20%
Total laser power: 930mW
Time setting: 5-30 minutes, 5 minutes as an interval
Battery capacity: 2600mAh
Battery Charging Time: 2~2.5 Hours

Disclaimer

( 1 ) DO NOT use this product if you are pregnant, have cancer, or have a hemorrhagic disease.

( 2 ) The aseptic operation must be strictly implemented in the treatment of patients with soft tissue infection. During the treatment, if any reactions such as dizziness, nausea, and fatigue, the treatment time should be reduced and gradually adapted.

( 3 ) The treatment will accelerate the body's metabolism, please drink water properly before and after treatment.

( 4 ) Long-term treatment of the body will produce tolerance and affect the treatment effect, please take interval rests strictly according to the requirements of the treatment course.

Free Shipping

Free shipping. The referenced transit time is 7-10 business days for shipping in the USA.

30-Day Money Back Guarantee

At any time within 30 days of receiving your order, you are not 100% satisfied, you may return it to us for a refund.
If you bought the product from www.getwellue.com, you can return it to us. Your payment card will be credited upon receipt of the returned merchandise. Any items damaged due to reasons not covered under warranty cannot be accepted back for refund under our 30 Day Money Back Guarantee.
If you are sure you want to return the goods, please contact us at first at support@getwellue.com. We provide 24/7 ticket and email support. Please contact us if you need assistance.

Reviews, Q&A

Customer Reviews

Based on 168 reviews
80%
(134)
17%
(29)
2%
(3)
1%
(2)
0%
(0)
T
Thomas L.
Evaluation of SleepU

I have been searching for years to have a wireless monitor to record nocturnal SPO2 level in order to see how effective my CPAP machine is. This device satisfies my need so that I can adjust the air pressure settings to eliminate all drops and keep oxygen saturation about 95% consistently every night. For that I could have rated this product five stars.

However, I found several issues that should be corrected in both the APP and the hardware. The bottom trace that displays the motion artifact occurrences is hardly visible. A different color with much better contrast should be considered. Secondly, The heart rate "spikes" are almost always caused by artifacts as clearly shown in the spreadsheet data. Since the device has a motion sensor built-in the heart rate readings could be corrected as many fitness wearable devices have done. On the hardware side, 8 out of 10 times when I plug the device in for recharge I have to do it twice to activate the charging mode.

Besides the above I think this device is ideal for sleep study at home to diagnose sleep apnea disease. This can be included in a Sleep Study Kit the hospitals prescribe for the patients to do at home. The current unit price is very reasonable for that market. For consumer use it is too high unless the above issues be resolved and the heart rate reading be made more accurate. I hope both the firmware and the APP will be upgraded in the foreseeable future.

I do like the light weight and the sensor location. It is comfortable to wear and the SPO2 readings are accurate. This is the best part of the device. Very well designed. By the way, I turned off the vibration mode since I have no need of that feature.

R
Roger

I have sleep apnea and use a CPAP machine most of the time. I wanted a way to see how bad my spO2 levels would drop when not using the CPAP in different sleeping positions. This monitor worked very well and was easy to use. Excellent graphs on my IPhone. Was able to prove that by sleeping more upright I would have less apnea events, but demonstrated conclusively that I still need to use the CPAP.

R
Rich S.

I use a dental appliance for sleep apnea, but it's hard to know where to set it. Using symptoms such as daytime sleepiness is an extremely rough measure. Using the Wellue SPO2 monitor helped me figure out that my apnea wasn't being fully treated. It also pulses to keep the remaining few apnea events short. It doesn't usually wake me, but that's perfect. The vibration needn't wake you - if it keeps the amount of time under 90% low that's all you need and is less disruptive of sleep. I've been diagnosed with Meniere's, but it turned out that all I had was undertreated sleep apnea. I would not have been able to figure this out without using this device. Highly recommended for anyone with sleep apnea as a monitor and backup for whatever you use to control it.

D
Donna
Thank You!

This has been a lifesaver! Our doctor seems to have his protocol book for a brain with no room for anything but a CPAP solution. We've heard a lot about those and figured we'd try this, first. What an eye-opener for my husband! He didn't really believe my descriptions of his sleep problems. Now, it's not just me letting him know he has a problem and he can finally see exactly what's really happening when he thinks he's sleeping blissfully - he's not! Now, he's awakened when he stops breathing, but just enough to turn over and breathe himself back to sleep. Thank you, thank you, thank you! P.S. We bought a back-up - just in case something happens to this one.

M
Ms J.

ve had this monitor for a good few months now and I must say it really is an excellent piece of equipment. There was a few teething issues (mostly down to user error!) but the support from the manufacturer is the best I have come across in a long time, they are personable, trustworthy and efficient. The watch itself is easy to use and comfortable to wear, you can set the vibration intensity to your preferred setting and the o2 level to what you want it to be. The battery lasts for a good nights sleep (I've had it on for over 10 hours without issue), just make sure the app is not running on your phone as this can drain the battery life. The readings provide great evidence to consultants and you can sleep comfortably knowing that you will be gently woken if your o2 levels drop too low. If you are worried about your 02 levels at night (which is probably why you are reading this!) then I would not hesitate, definitely worth the money.

M
Matt

Easy to use and fascinatingly insightful results. My partner has been telling me that I frequently stop breathing in the night for a while now, so not wanting to jump straight to the CPAP machines I started looking for sleep monitoring instead. This looked like the most comfortable/reliable device and after using it for ~10 days I am very pleased with my choice!
The battery seems fine, some other reviewers had trouble but mine has lasted well. Longest session so far 9hrs 30mins. The app is very easy to use, the build quality is great/comfortable and the results for me have been very interesting.
In the first few days of use the device recorded many drops, some of which as low as the mid 80's (% SpO2) accompanied by huge heart rate spikes - the app clearly shows that I've been practically suffocating in my sleep! Over the following week I adjusted the vibration to a weaker setting, and the threshold to 91%, and this seems to be a sweet spot for me. I still get drops but my time below 90% is down to 0% and the vibration seems to be enough to nudge me to roll over without fully waking me up. Fewer heart rate spikes and nowhere near as high.
I'd certainly recommend this device for anyone who wants to analyse their sleep at home and the vibration on low O2 has clearly been working to keep me from suffocating so full marks from me!
Notes: the device emits a constant dim red light around the finger, that's how it measures your SpO2, it's not very bright. The screen is much brighter when you first put the device on but turns off after a minute or two. The device is quite easy to put on, the rubber strap has a couple of metal clasps that you just push through the holes on the other side. You can charge the device from your computers USB or
from a phone charger, it comes with an appropriate usb cable.

S
Steve B.
Ring Oximeter

Great product, easy to use, easy to understand and utilise. Used with a Down Syndrome adult who is unresponsive and difficult to work with. Product handled rough treatment and continual throwing very well, and provided very useful and meaningful data.

D
Douglas C.
Great sleep therapy product!

High-quality, comfortable, very useful sleep therapy product for monitoring and possibly mitigating effects of obstructive sleep apnea, snoring and tracking effects of sleep on sports and exercise performance. Provides accurate, reliable, multi-function data on ❤️ pulse rate, SP02 oxygen levels, provides gentle vibrating alarm when breathing drops below 4% and measures periods of restlessness. Also an excellent complement to Fitbit sports device.

T
Tom W.

It works as advertised. I really like the fact that if your oxygen level drops below 90 it vibrates and wakes you up. I have this happen almost every night.. Easy to use and it works well with my phone app. You do need to be sure to unplug it from the charger when you connect with blue tooth. It doesn't seem to be able to do both. Also I have had trouble connecting it to my PC. Overall I would say it's very well designed (comfortable) and it does a great job.

G
Gary
SleepU Oxi

Best device out of 3 that I purchased online. PC reports are excellent. Phone app looks good as well but I prefer the detail of PC report. This device vibrates for low oxygen levels. User can set vibration level. I wish the device could also vibrate on low heart rates. Everyone should use this device periodically, even if they don't think they have sleep apnea. I have sleep apnea and it has ravaged my health. Usually this device is purchased to track oxygen levels but don't overlook the importance of evaluating your heart rate at night too! This is a great device.

What's in the Box?

  • Wellue SleepU™ Smart Wrist Oxygen Monitor
  • Data/Charging USB Cable
  • Finger Ring Sensor Cable
  • User Guide

* Smart phone and laptop NOT included

Free Shipping

We offer free shipping for SleepU™ internationally. For countries and regions we can deliver to, the referenced transit time is 2-8 business days.

You can track your order status anytime here https://getwellue.com/pages/track-order. Please feel free to contact us if you have any questions or concerns. 

30-Day Money Back Guarantee

At any time within 30 days of receiving your order, you are not 100% satisfied, you may return it to us for a refund.
If you bought the product from www.getwellue.com, you can return it to us. Your payment card will be credited upon receipt of the returned merchandise. Any items damaged due to reasons not covered under warranty cannot be accepted back for refund under our 30 Day Money Back Guarantee.

If you are sure you want to return the goods, please contact us at first at support@getwellue.com. We provide 24/7 ticket and email support. Please contact us if you need assistance.

Compare with the Similar Products

Wearable Type

Wrist-worn

Ring

Wrist-worn

Vibration Triggers on Device or app

SpO2

SpO2, Heart Rate

SpO2, Heart Rate

Notification Method on Device

Vibration

Vibration


Vibration, Beep


Battery Life

Up to 16 Hours

Up to 16 Hours

Up to 72 Hours

Data Display Interval in App

4 seconds

4 seconds

2 seconds

Reviews, Q&A

Customer Reviews

Based on 168 reviews
80%
(134)
17%
(29)
2%
(3)
1%
(2)
0%
(0)
T
Thomas L.
Evaluation of SleepU

I have been searching for years to have a wireless monitor to record nocturnal SPO2 level in order to see how effective my CPAP machine is. This device satisfies my need so that I can adjust the air pressure settings to eliminate all drops and keep oxygen saturation about 95% consistently every night. For that I could have rated this product five stars.

However, I found several issues that should be corrected in both the APP and the hardware. The bottom trace that displays the motion artifact occurrences is hardly visible. A different color with much better contrast should be considered. Secondly, The heart rate "spikes" are almost always caused by artifacts as clearly shown in the spreadsheet data. Since the device has a motion sensor built-in the heart rate readings could be corrected as many fitness wearable devices have done. On the hardware side, 8 out of 10 times when I plug the device in for recharge I have to do it twice to activate the charging mode.

Besides the above I think this device is ideal for sleep study at home to diagnose sleep apnea disease. This can be included in a Sleep Study Kit the hospitals prescribe for the patients to do at home. The current unit price is very reasonable for that market. For consumer use it is too high unless the above issues be resolved and the heart rate reading be made more accurate. I hope both the firmware and the APP will be upgraded in the foreseeable future.

I do like the light weight and the sensor location. It is comfortable to wear and the SPO2 readings are accurate. This is the best part of the device. Very well designed. By the way, I turned off the vibration mode since I have no need of that feature.

R
Roger

I have sleep apnea and use a CPAP machine most of the time. I wanted a way to see how bad my spO2 levels would drop when not using the CPAP in different sleeping positions. This monitor worked very well and was easy to use. Excellent graphs on my IPhone. Was able to prove that by sleeping more upright I would have less apnea events, but demonstrated conclusively that I still need to use the CPAP.

R
Rich S.

I use a dental appliance for sleep apnea, but it's hard to know where to set it. Using symptoms such as daytime sleepiness is an extremely rough measure. Using the Wellue SPO2 monitor helped me figure out that my apnea wasn't being fully treated. It also pulses to keep the remaining few apnea events short. It doesn't usually wake me, but that's perfect. The vibration needn't wake you - if it keeps the amount of time under 90% low that's all you need and is less disruptive of sleep. I've been diagnosed with Meniere's, but it turned out that all I had was undertreated sleep apnea. I would not have been able to figure this out without using this device. Highly recommended for anyone with sleep apnea as a monitor and backup for whatever you use to control it.

D
Donna
Thank You!

This has been a lifesaver! Our doctor seems to have his protocol book for a brain with no room for anything but a CPAP solution. We've heard a lot about those and figured we'd try this, first. What an eye-opener for my husband! He didn't really believe my descriptions of his sleep problems. Now, it's not just me letting him know he has a problem and he can finally see exactly what's really happening when he thinks he's sleeping blissfully - he's not! Now, he's awakened when he stops breathing, but just enough to turn over and breathe himself back to sleep. Thank you, thank you, thank you! P.S. We bought a back-up - just in case something happens to this one.

M
Ms J.

ve had this monitor for a good few months now and I must say it really is an excellent piece of equipment. There was a few teething issues (mostly down to user error!) but the support from the manufacturer is the best I have come across in a long time, they are personable, trustworthy and efficient. The watch itself is easy to use and comfortable to wear, you can set the vibration intensity to your preferred setting and the o2 level to what you want it to be. The battery lasts for a good nights sleep (I've had it on for over 10 hours without issue), just make sure the app is not running on your phone as this can drain the battery life. The readings provide great evidence to consultants and you can sleep comfortably knowing that you will be gently woken if your o2 levels drop too low. If you are worried about your 02 levels at night (which is probably why you are reading this!) then I would not hesitate, definitely worth the money.

M
Matt

Easy to use and fascinatingly insightful results. My partner has been telling me that I frequently stop breathing in the night for a while now, so not wanting to jump straight to the CPAP machines I started looking for sleep monitoring instead. This looked like the most comfortable/reliable device and after using it for ~10 days I am very pleased with my choice!
The battery seems fine, some other reviewers had trouble but mine has lasted well. Longest session so far 9hrs 30mins. The app is very easy to use, the build quality is great/comfortable and the results for me have been very interesting.
In the first few days of use the device recorded many drops, some of which as low as the mid 80's (% SpO2) accompanied by huge heart rate spikes - the app clearly shows that I've been practically suffocating in my sleep! Over the following week I adjusted the vibration to a weaker setting, and the threshold to 91%, and this seems to be a sweet spot for me. I still get drops but my time below 90% is down to 0% and the vibration seems to be enough to nudge me to roll over without fully waking me up. Fewer heart rate spikes and nowhere near as high.
I'd certainly recommend this device for anyone who wants to analyse their sleep at home and the vibration on low O2 has clearly been working to keep me from suffocating so full marks from me!
Notes: the device emits a constant dim red light around the finger, that's how it measures your SpO2, it's not very bright. The screen is much brighter when you first put the device on but turns off after a minute or two. The device is quite easy to put on, the rubber strap has a couple of metal clasps that you just push through the holes on the other side. You can charge the device from your computers USB or
from a phone charger, it comes with an appropriate usb cable.

S
Steve B.
Ring Oximeter

Great product, easy to use, easy to understand and utilise. Used with a Down Syndrome adult who is unresponsive and difficult to work with. Product handled rough treatment and continual throwing very well, and provided very useful and meaningful data.

D
Douglas C.
Great sleep therapy product!

High-quality, comfortable, very useful sleep therapy product for monitoring and possibly mitigating effects of obstructive sleep apnea, snoring and tracking effects of sleep on sports and exercise performance. Provides accurate, reliable, multi-function data on ❤️ pulse rate, SP02 oxygen levels, provides gentle vibrating alarm when breathing drops below 4% and measures periods of restlessness. Also an excellent complement to Fitbit sports device.

T
Tom W.

It works as advertised. I really like the fact that if your oxygen level drops below 90 it vibrates and wakes you up. I have this happen almost every night.. Easy to use and it works well with my phone app. You do need to be sure to unplug it from the charger when you connect with blue tooth. It doesn't seem to be able to do both. Also I have had trouble connecting it to my PC. Overall I would say it's very well designed (comfortable) and it does a great job.

G
Gary
SleepU Oxi

Best device out of 3 that I purchased online. PC reports are excellent. Phone app looks good as well but I prefer the detail of PC report. This device vibrates for low oxygen levels. User can set vibration level. I wish the device could also vibrate on low heart rates. Everyone should use this device periodically, even if they don't think they have sleep apnea. I have sleep apnea and it has ravaged my health. Usually this device is purchased to track oxygen levels but don't overlook the importance of evaluating your heart rate at night too! This is a great device.

What's in the Box?

  • Wellue SleepU™ smart wrist oxygen monitor
  • Data/Charging USB cable
  • Finger ring sensor cable
  • User guide

Free Shipping

We offer free shipping for SleepU™ internationally. For countries and regions we can deliver to, the referenced transit time is 2-8 business days.

You can track your order status anytime herehttps://getwellue.com/pages/track-order. Please feel free to contact us if you have any questions or concerns. 

30-Day Money Back Guarantee

At any time within 30 days of receiving your order, you are not 100% satisfied, you may return it to us for a refund.
If you bought the product from www.getwellue.com, you can return it to us. Your payment card will be credited upon receipt of the returned merchandise. Any items damaged due to reasons not covered under warranty cannot be accepted back for refund under our 30 Day Money Back Guarantee.

If you are sure you want to return the goods, please contact us at first at support@getwellue.com. We provide 24/7 ticket and email support. Please contact us if you need assistance.

Compare with the Similar Products

  • vs. O2Ring
  • vs. Checkme™ O2

Wrist-worn

SpO2 Reminder

Vibration

Up to 16 Hrs Battery Life

4s Interval for Data Display

Ring

SpO2, Heart Rate Reminder

Vibration

Up to 16 Hrs Battery Life

4s Interval for Data Display

Wrist-worn

SpO2 Reminder

Vibration

Up to 16 Hrs Battery Life

4s Interval for Data Display

Wrist-worn

SpO2, Heart Rate Reminder

Vibration, Beep

Up to 72 Hrs Battery Life

2s Interval for Data Display

Reviews, Q&A

Customer Reviews

Based on 168 reviews
80%
(134)
17%
(29)
2%
(3)
1%
(2)
0%
(0)
T
Thomas L.
Evaluation of SleepU

I have been searching for years to have a wireless monitor to record nocturnal SPO2 level in order to see how effective my CPAP machine is. This device satisfies my need so that I can adjust the air pressure settings to eliminate all drops and keep oxygen saturation about 95% consistently every night. For that I could have rated this product five stars.

However, I found several issues that should be corrected in both the APP and the hardware. The bottom trace that displays the motion artifact occurrences is hardly visible. A different color with much better contrast should be considered. Secondly, The heart rate "spikes" are almost always caused by artifacts as clearly shown in the spreadsheet data. Since the device has a motion sensor built-in the heart rate readings could be corrected as many fitness wearable devices have done. On the hardware side, 8 out of 10 times when I plug the device in for recharge I have to do it twice to activate the charging mode.

Besides the above I think this device is ideal for sleep study at home to diagnose sleep apnea disease. This can be included in a Sleep Study Kit the hospitals prescribe for the patients to do at home. The current unit price is very reasonable for that market. For consumer use it is too high unless the above issues be resolved and the heart rate reading be made more accurate. I hope both the firmware and the APP will be upgraded in the foreseeable future.

I do like the light weight and the sensor location. It is comfortable to wear and the SPO2 readings are accurate. This is the best part of the device. Very well designed. By the way, I turned off the vibration mode since I have no need of that feature.

R
Roger

I have sleep apnea and use a CPAP machine most of the time. I wanted a way to see how bad my spO2 levels would drop when not using the CPAP in different sleeping positions. This monitor worked very well and was easy to use. Excellent graphs on my IPhone. Was able to prove that by sleeping more upright I would have less apnea events, but demonstrated conclusively that I still need to use the CPAP.

R
Rich S.

I use a dental appliance for sleep apnea, but it's hard to know where to set it. Using symptoms such as daytime sleepiness is an extremely rough measure. Using the Wellue SPO2 monitor helped me figure out that my apnea wasn't being fully treated. It also pulses to keep the remaining few apnea events short. It doesn't usually wake me, but that's perfect. The vibration needn't wake you - if it keeps the amount of time under 90% low that's all you need and is less disruptive of sleep. I've been diagnosed with Meniere's, but it turned out that all I had was undertreated sleep apnea. I would not have been able to figure this out without using this device. Highly recommended for anyone with sleep apnea as a monitor and backup for whatever you use to control it.

D
Donna
Thank You!

This has been a lifesaver! Our doctor seems to have his protocol book for a brain with no room for anything but a CPAP solution. We've heard a lot about those and figured we'd try this, first. What an eye-opener for my husband! He didn't really believe my descriptions of his sleep problems. Now, it's not just me letting him know he has a problem and he can finally see exactly what's really happening when he thinks he's sleeping blissfully - he's not! Now, he's awakened when he stops breathing, but just enough to turn over and breathe himself back to sleep. Thank you, thank you, thank you! P.S. We bought a back-up - just in case something happens to this one.

M
Ms J.

ve had this monitor for a good few months now and I must say it really is an excellent piece of equipment. There was a few teething issues (mostly down to user error!) but the support from the manufacturer is the best I have come across in a long time, they are personable, trustworthy and efficient. The watch itself is easy to use and comfortable to wear, you can set the vibration intensity to your preferred setting and the o2 level to what you want it to be. The battery lasts for a good nights sleep (I've had it on for over 10 hours without issue), just make sure the app is not running on your phone as this can drain the battery life. The readings provide great evidence to consultants and you can sleep comfortably knowing that you will be gently woken if your o2 levels drop too low. If you are worried about your 02 levels at night (which is probably why you are reading this!) then I would not hesitate, definitely worth the money.

M
Matt

Easy to use and fascinatingly insightful results. My partner has been telling me that I frequently stop breathing in the night for a while now, so not wanting to jump straight to the CPAP machines I started looking for sleep monitoring instead. This looked like the most comfortable/reliable device and after using it for ~10 days I am very pleased with my choice!
The battery seems fine, some other reviewers had trouble but mine has lasted well. Longest session so far 9hrs 30mins. The app is very easy to use, the build quality is great/comfortable and the results for me have been very interesting.
In the first few days of use the device recorded many drops, some of which as low as the mid 80's (% SpO2) accompanied by huge heart rate spikes - the app clearly shows that I've been practically suffocating in my sleep! Over the following week I adjusted the vibration to a weaker setting, and the threshold to 91%, and this seems to be a sweet spot for me. I still get drops but my time below 90% is down to 0% and the vibration seems to be enough to nudge me to roll over without fully waking me up. Fewer heart rate spikes and nowhere near as high.
I'd certainly recommend this device for anyone who wants to analyse their sleep at home and the vibration on low O2 has clearly been working to keep me from suffocating so full marks from me!
Notes: the device emits a constant dim red light around the finger, that's how it measures your SpO2, it's not very bright. The screen is much brighter when you first put the device on but turns off after a minute or two. The device is quite easy to put on, the rubber strap has a couple of metal clasps that you just push through the holes on the other side. You can charge the device from your computers USB or
from a phone charger, it comes with an appropriate usb cable.

S
Steve B.
Ring Oximeter

Great product, easy to use, easy to understand and utilise. Used with a Down Syndrome adult who is unresponsive and difficult to work with. Product handled rough treatment and continual throwing very well, and provided very useful and meaningful data.

D
Douglas C.
Great sleep therapy product!

High-quality, comfortable, very useful sleep therapy product for monitoring and possibly mitigating effects of obstructive sleep apnea, snoring and tracking effects of sleep on sports and exercise performance. Provides accurate, reliable, multi-function data on ❤️ pulse rate, SP02 oxygen levels, provides gentle vibrating alarm when breathing drops below 4% and measures periods of restlessness. Also an excellent complement to Fitbit sports device.

T
Tom W.

It works as advertised. I really like the fact that if your oxygen level drops below 90 it vibrates and wakes you up. I have this happen almost every night.. Easy to use and it works well with my phone app. You do need to be sure to unplug it from the charger when you connect with blue tooth. It doesn't seem to be able to do both. Also I have had trouble connecting it to my PC. Overall I would say it's very well designed (comfortable) and it does a great job.

G
Gary
SleepU Oxi

Best device out of 3 that I purchased online. PC reports are excellent. Phone app looks good as well but I prefer the detail of PC report. This device vibrates for low oxygen levels. User can set vibration level. I wish the device could also vibrate on low heart rates. Everyone should use this device periodically, even if they don't think they have sleep apnea. I have sleep apnea and it has ravaged my health. Usually this device is purchased to track oxygen levels but don't overlook the importance of evaluating your heart rate at night too! This is a great device.

Regulatory & Compliance

The Checkme™ O2 Pulse Oximeter is a lightweight, portable health wrist oximeter for use in sleep labs, long-term care, hospitals, and home use. The device is indicated for use in measuring, displaying, storing, and transmitting functional oxygen saturation of arterial hemoglobin (SpO2) and pulse rate for adult patients. It is intended for spot-check and/ or continuous data collection, and not continuous monitoring. The data and results provided by this device are for pre-check screening purposes only and cannot be directly used for diagnosis or treatment.

The product is FDA cleared (FDA clearance link). An individual customer needs a prescription to purchase The Checkme™ O2. Please email the Rx to us at: support@getwellue.com.

What's in the Box?

  • Checkme™ O2 Wrist Oxygen Monitor
  • Data/Charging USB Cable
  • Finger Ring Sensor Cable
  • User guide

Free Shipping

We offer free shipping for Checkme™ O2 internationally. For countries and regions we can deliver to, the referenced transit time is 2-8 business days.

You can track your order status anytime here https://getwellue.com/pages/track-order. Please feel free to contact us if you have any questions or concerns. 

30-Day Money Back Guarantee

At any time within 30 days of receiving your order, you are not 100% satisfied, you may return it to us for a refund.
If you bought the product from www.getwellue.com, you can return it to us. Your payment card will be credited upon receipt of the returned merchandise. Any items damaged due to reasons not covered under warranty cannot be accepted back for refund under our 30 Day Money Back Guarantee.

If you are sure you want to return the goods, please contact us at first at support@getwellue.com. We provide 24/7 ticket and email support. Please contact us if you need assistance.

Tech Specs

Weight (Main Unit)

0.63 oz / 18g


Device Dimensions

1.9'' x 1.0'' x 0.7'' 


Ring Perimeter

2.0'' - 3.0''


Wireless

Bluetooth 4.0 BLE 


Battery Life

Rechargeable lithium-polymer, 3.7 Vdc, 72 hours for typical use

Degree Of Dust & Water Resistance

IP22 


Recorded Parameters

Oxygen levels, pulse rate, motion 


Compatible Computer System

Windows 7/8/10

macOS 10.15.3 or later


Works With

iOS: Version 9.0 or later, iPhone 4s/iPad 3 or later

Android: Version 5.0 or later, with Bluetooth 4.0 BLE

Oxygen Level Range

70% - 100%


Pulse Rate Range

30 to 250 bpm


Sampling Interval

1 second 


Display Interval In App

2 seconds 


Built-in Memory

4 records, up to 10 hours for each



Compare with the Similar Products

Wearable Type

Wrist-worn

Ring

Wrist-worn

Vibration Triggers on Device or app

SpO2, Heart Rate

SpO2, Heart Rate

SpO2

Notification Method on Device

Vibration, Beep

Vibration


Vibration


Battery Life

Up to 72 Hours

Up to 16 Hours

Up to 16 Hours

Data Display Interval in App

2 seconds

4 seconds

4 seconds

You May Also Like

SleepU Wrist Sleep Oxygen Monitor

Track oxygen levels and pulse rates overnight, sleep with peace of mind

  Patented Ring Sensor: allows your finger to move freely while staying securely in place

  Smart vibration when oxygen level drops below preset threshold

  The unit can store 4 sessions data (up to 10 hrs for each)

  Print & share free 4s interval oximetry reports

$159.00$169.00

*This device is for General Wellness use only and not intended for medical use. 

Whole Night Continuous Sampling

Up to 16 hrs of battery life|2.5 hrs Charging Time

Blood Oxygen

Pulse Rate

Body Motion

A Brand You Can Trust

Sleep Reports Capture Every SpO2 Drop Event

Monitoring your sleep at home has never been easier!

You can share unlimited sleep oximetry reports with your families or others.

*The image shows a PC Sleep Report, which can also be exported from the app.

A Brand You Can Trust

Remind You to Breathe Well

The VIBRATION in the patented ring sensor will nudge you gently to change your sleep position when your blood oxygen level is below the preset value. Rolling onto your side (the recommended position) can help open your airway to breathe more oxygen.

A Brand You Can Trust

Effective at reducing the risk of low and unhealthy blood oxygen levels during sleep, this device serves as a safety net for CPAP failure. It also helps you assess the effectiveness of your CPAP machine or oxygen concentrator while providing additional insights.

Adjustable Vibration

Customize your notifications on the app: adjust the vibration intensity and threshold to make yourself comfortable. You can also turn on/off vibration.

A Brand You Can Trust

Patented Ring Sensor 

Featuring a Flexible Component

other

Duckbill Sensor

  • slip off easily

  • Finger is Restricted

  • Numb and Sweaty 

    the Finger

  • No Reminder

SleepU™

  • stay fixed in finger

  • Free the Finger to Move

  • Doesn't Fully Cover or Press the finger

  • Smart SpO2 Reminder

Free app (integrated with Apple Health/Fitbit), PC and Mac software

High Resolution Charts

The app records an unlimited amount of data and provides high-resolution charts with data at 4s intervals. 

You can annotate and export each data set for professional reference, making it crucial for capturing subtle physiological fluctuations for optimization.

A Brand You Can Trust

Trend History Review

By reviewing weekly, monthly, and yearly data trends, you can easily see if your oxygen levels remain in a good range.

Meanwhile, it helps adjust your care and outcome trajectories, and rest assured your sleep health is in good hands.

A Brand You Can Trust

Getting Started is Easy

Wear SleepU™

The device will automatically turn on and start monitoring.

Take It Off

Your recordings are automatically stored in SleepU™.


Sync Your Data

Easily sync data to the app and PC software for detailed analysis. Share reports in PDF, CSV, or Binary formats with others.


Tech Specs

Weight (Main Unit ith Band and Sensor)

1.09 oz / 31g


Device Dimensions

1.6'' x 0.9'' x 0.5''


Ring Perimeter

2.0'' - 3.0'' / 50-76mm


Wireless

Bluetooth 4.0 BLE 


Battery Life

Rechargeable lithium-polymer, 3.7 Vdc, 16 hours for typical use

Oxygen Level Range

70% - 99%


SpO2 Accuracy (Arms)

80-99%: ±2%; 70-79%: ±3%


Pulse Rate Range

30 to 250 bpm


PR Accuracy

±2bpm or ±2%, whichever is greater


Sampling Interval

1 second 


Display Interval In App

4 seconds 


Maximum Suitable Wrist Size

21 cm


Built-in Memory

4 records, up to 10 hours for each


Vibration

Triggered by low oxygen level

Degree Of Dust & Water Resistance

IP22 


Recorded Parameters

Oxygen levels, pulse rate, motion 


Compatible Computer System

Windows 7 or later

macOS 10.15.3 or later


Works With

iOS: Version 9.0 or later, iPhone 4s/iPad 3 or later

Android: Version 5.0 or later, with Bluetooth 4.0 BLE

In Case You Need Extra Accessories

Reviews, Q&A

Customer Reviews

Based on 168 reviews
80%
(134)
17%
(29)
2%
(3)
1%
(2)
0%
(0)
T
Thomas L.
Evaluation of SleepU

I have been searching for years to have a wireless monitor to record nocturnal SPO2 level in order to see how effective my CPAP machine is. This device satisfies my need so that I can adjust the air pressure settings to eliminate all drops and keep oxygen saturation about 95% consistently every night. For that I could have rated this product five stars.

However, I found several issues that should be corrected in both the APP and the hardware. The bottom trace that displays the motion artifact occurrences is hardly visible. A different color with much better contrast should be considered. Secondly, The heart rate "spikes" are almost always caused by artifacts as clearly shown in the spreadsheet data. Since the device has a motion sensor built-in the heart rate readings could be corrected as many fitness wearable devices have done. On the hardware side, 8 out of 10 times when I plug the device in for recharge I have to do it twice to activate the charging mode.

Besides the above I think this device is ideal for sleep study at home to diagnose sleep apnea disease. This can be included in a Sleep Study Kit the hospitals prescribe for the patients to do at home. The current unit price is very reasonable for that market. For consumer use it is too high unless the above issues be resolved and the heart rate reading be made more accurate. I hope both the firmware and the APP will be upgraded in the foreseeable future.

I do like the light weight and the sensor location. It is comfortable to wear and the SPO2 readings are accurate. This is the best part of the device. Very well designed. By the way, I turned off the vibration mode since I have no need of that feature.

R
Roger

I have sleep apnea and use a CPAP machine most of the time. I wanted a way to see how bad my spO2 levels would drop when not using the CPAP in different sleeping positions. This monitor worked very well and was easy to use. Excellent graphs on my IPhone. Was able to prove that by sleeping more upright I would have less apnea events, but demonstrated conclusively that I still need to use the CPAP.

R
Rich S.

I use a dental appliance for sleep apnea, but it's hard to know where to set it. Using symptoms such as daytime sleepiness is an extremely rough measure. Using the Wellue SPO2 monitor helped me figure out that my apnea wasn't being fully treated. It also pulses to keep the remaining few apnea events short. It doesn't usually wake me, but that's perfect. The vibration needn't wake you - if it keeps the amount of time under 90% low that's all you need and is less disruptive of sleep. I've been diagnosed with Meniere's, but it turned out that all I had was undertreated sleep apnea. I would not have been able to figure this out without using this device. Highly recommended for anyone with sleep apnea as a monitor and backup for whatever you use to control it.

D
Donna
Thank You!

This has been a lifesaver! Our doctor seems to have his protocol book for a brain with no room for anything but a CPAP solution. We've heard a lot about those and figured we'd try this, first. What an eye-opener for my husband! He didn't really believe my descriptions of his sleep problems. Now, it's not just me letting him know he has a problem and he can finally see exactly what's really happening when he thinks he's sleeping blissfully - he's not! Now, he's awakened when he stops breathing, but just enough to turn over and breathe himself back to sleep. Thank you, thank you, thank you! P.S. We bought a back-up - just in case something happens to this one.

M
Ms J.

ve had this monitor for a good few months now and I must say it really is an excellent piece of equipment. There was a few teething issues (mostly down to user error!) but the support from the manufacturer is the best I have come across in a long time, they are personable, trustworthy and efficient. The watch itself is easy to use and comfortable to wear, you can set the vibration intensity to your preferred setting and the o2 level to what you want it to be. The battery lasts for a good nights sleep (I've had it on for over 10 hours without issue), just make sure the app is not running on your phone as this can drain the battery life. The readings provide great evidence to consultants and you can sleep comfortably knowing that you will be gently woken if your o2 levels drop too low. If you are worried about your 02 levels at night (which is probably why you are reading this!) then I would not hesitate, definitely worth the money.

M
Matt

Easy to use and fascinatingly insightful results. My partner has been telling me that I frequently stop breathing in the night for a while now, so not wanting to jump straight to the CPAP machines I started looking for sleep monitoring instead. This looked like the most comfortable/reliable device and after using it for ~10 days I am very pleased with my choice!
The battery seems fine, some other reviewers had trouble but mine has lasted well. Longest session so far 9hrs 30mins. The app is very easy to use, the build quality is great/comfortable and the results for me have been very interesting.
In the first few days of use the device recorded many drops, some of which as low as the mid 80's (% SpO2) accompanied by huge heart rate spikes - the app clearly shows that I've been practically suffocating in my sleep! Over the following week I adjusted the vibration to a weaker setting, and the threshold to 91%, and this seems to be a sweet spot for me. I still get drops but my time below 90% is down to 0% and the vibration seems to be enough to nudge me to roll over without fully waking me up. Fewer heart rate spikes and nowhere near as high.
I'd certainly recommend this device for anyone who wants to analyse their sleep at home and the vibration on low O2 has clearly been working to keep me from suffocating so full marks from me!
Notes: the device emits a constant dim red light around the finger, that's how it measures your SpO2, it's not very bright. The screen is much brighter when you first put the device on but turns off after a minute or two. The device is quite easy to put on, the rubber strap has a couple of metal clasps that you just push through the holes on the other side. You can charge the device from your computers USB or
from a phone charger, it comes with an appropriate usb cable.

S
Steve B.
Ring Oximeter

Great product, easy to use, easy to understand and utilise. Used with a Down Syndrome adult who is unresponsive and difficult to work with. Product handled rough treatment and continual throwing very well, and provided very useful and meaningful data.

D
Douglas C.
Great sleep therapy product!

High-quality, comfortable, very useful sleep therapy product for monitoring and possibly mitigating effects of obstructive sleep apnea, snoring and tracking effects of sleep on sports and exercise performance. Provides accurate, reliable, multi-function data on ❤️ pulse rate, SP02 oxygen levels, provides gentle vibrating alarm when breathing drops below 4% and measures periods of restlessness. Also an excellent complement to Fitbit sports device.

T
Tom W.

It works as advertised. I really like the fact that if your oxygen level drops below 90 it vibrates and wakes you up. I have this happen almost every night.. Easy to use and it works well with my phone app. You do need to be sure to unplug it from the charger when you connect with blue tooth. It doesn't seem to be able to do both. Also I have had trouble connecting it to my PC. Overall I would say it's very well designed (comfortable) and it does a great job.

G
Gary
SleepU Oxi

Best device out of 3 that I purchased online. PC reports are excellent. Phone app looks good as well but I prefer the detail of PC report. This device vibrates for low oxygen levels. User can set vibration level. I wish the device could also vibrate on low heart rates. Everyone should use this device periodically, even if they don't think they have sleep apnea. I have sleep apnea and it has ravaged my health. Usually this device is purchased to track oxygen levels but don't overlook the importance of evaluating your heart rate at night too! This is a great device.