Oxygen Monitor

Always on, always accurate, giving you peace of mind.

A wearable ring-shaped oxygen monitor device held between fingers with a smartphone displaying corresponding oxygen level, pulse rate, and motion data.

Best selling oxygen monitor that tracks your daily oxygen levels.

$179.00$159.98
Wellue O2Ring-S smart ring with ViHealth app showing real-time oxygen and pulse data

Improved signal filtering, for more stable and accurate readings.

$219.00$199.00
Checkme™ O2 Wrist Oxygen Monitor

Tracks SpO2 and heart rate every second for up to 72 hours.

$229.00$204.00
SleepU™ Wrist Sleep Oxygen Monitor

Sleep-focused design with reliable all-night oxygen tracking.

$169.00$159.00
KidsO2™ Child Oxygen Monitor

Tracks children's SpO2 continuously for extended use.

$149.00

KidsO2™ For Smaller Fingers: Adults and Kids

Two Wellue O2Ring smart ring pulse oximeters showing SpO2 readings on a white background

Easy day-to-night switch for smart all-day tracking.

$358.00$268.50

Compare Features. Pick with Confidence.

O2Ring-S 

Smart Ring Pulse Oximeter

$199.00

O2Ring™ Continuous Ring Oxygen Monitor

$159.98

KidsO2™ 

Smart Oxygen Monitor

$149.00

Wearing Style

Ring

Ring

Ring

Device & App Vibration Trigger

 SpO2, HR

SpO2, HR

SpO2, HR

Alert Type

Vibration

Vibration

Vibration

Battery Life 

Up to 24 Hours

Up to 16 Hours

Up to 16 Hours

PC Software

Yes

Yes

Yes

Report Metrics

<90% Time,

Drops over>4%,

Drops per Hour, Avg. Lowest SpO2,HR,O2 Score

Same as left

Same as left

Historical Trends in App

O2 Score, Drops,Lowest SpO2,HR

Same as left

Same as left

App Data Update Interval 

1S

4S

4S

Apple Health

Yes

Yes

Yes

A wearable ring-shaped oxygen monitor device held between fingers with a smartphone displaying corresponding oxygen level, pulse rate, and motion data.

Best selling oxygen monitor that tracks your daily oxygen levels.

$179.00$159.98
Wellue O2Ring-S smart ring with ViHealth app showing real-time oxygen and pulse data

Improved signal filtering, for more stable and accurate readings.

$219.00$199.00
Checkme™ O2 Wrist Oxygen Monitor

Tracks SpO2 and heart rate every second for up to 72 hours.

$229.00$204.00
SleepU™ Wrist Sleep Oxygen Monitor

Sleep-focused design with all-night oxygen tracking.

$169.00$159.00
KidsO2™ Child Oxygen Monitor

Tracks children's SpO2 continuously for extended use.

$149.00
Two Wellue O2Ring smart ring pulse oximeters showing SpO2 readings on a white background

Easy day-to-night switch for smart all-day tracking.

$358.00$268.50

SleepU™ 

Wrist Oxygen Monitor

$159.00

Checkme™ O2 

Wrist Oxygen Monitor

$204.00

Wearing Style

Wrist-Worn

Wrist-Worn

Device & App Vibration Trigger

 SpO2, Heart Rate

SpO2, Heart Rate

Alert Type

Vibration

Vibration & Buzzing

Battery Life 

Up to 16 Hours

Up to 72 Hours

PC Software

Yes

Yes

Report Metrics

<90% Time,Drops over>4%,Drops per Hour, Avg. Lowest SpO2,HR,O2 Score

Same as left

Historical Trends in App

O2 Score, Drops,Lowest SpO2,HR

Same as left

App Data Update Interval 

4S

2S

Apple Health

Yes

Yes

Compare Features. Pick with Confidence.

O2Ring™ Continuous Ring Oxygen Monitor

$159.98

O2Ring-S 

Smart Ring Pulse Oximeter

$199.00

For smaller fingers: adults & kids

KidsO2™ Smart Oxygen Monitor

$149.00

Wearing Style

Ring

Ring

Ring

Vibration Trigger (Device)

SpO2, Heart Rate

SpO2, Heart Rate

SpO2, Heart Rate

Vibration Trigger (App) 

SpO2, Heart Rate

SpO2, Heart Rate

SpO2, Heart Rate

Alert Type

Vibration

Vibration

Vibration

Battery Life 

Up to 16 Hours

Up to 24 Hours

Up to 16 Hours

PC Software

Yes

Yes

Yes

Report Metrics

<90% Time,Drops over>4%,Drops per Hour, Avg. Lowest SpO2,HR,O2 Score

Same as left

Same as left

Historical Trends in App 

O2 Score, Drops, Lowest SpO2, HR

Same as left

Same as left

App Data Update Interval 

4s

1s

4s

Apple Health

Yes

Yes

Yes

SleepU™ 

Wrist Oxygen Monitor

$159.00

Checkme™ O2 

Wrist Oxygen Monitor

$204.00

Wearing Style

Wrist-Worn

Wrist-Worn

Vibration Trigger (Device)

 SpO2

SpO2, Heart Rate

Vibration Trigger (App) 

 SpO2

SpO2, Heart Rate

Alert Type

Vibration

Vibration & Buzzing

Battery Life 

Up to 16 Hours

Up to 72 Hours

PC Software

Yes

Yes

Report Metrics

<90% Time,Drops over>4%,Drops per Hour, Avg. Lowest SpO2,HR,O2 Score

Same as left

Historical Trends in App 

O2 Score, Drops, Lowest SpO2, HR

Same as left

App Data Update Interval 

4s

2s

Apple Health

Yes

Yes

Why Choose Wellue for Oxygen Monitoring?

Medical-Grade Accuracy


Managing sleep apnea, COPD, or altitude? Precision matters — that's why Wellue uses transmission-based pulse oximetry, the same technology trusted in hospital monitors.

Track Oxygen Levels Continuously Overnight


Automatically track your oxygen levels, pulse rate, and movement throughout the night, with a detailed report ready when you wake up.

Low Oxygen Alerts with Event Tagging


Set your low oxygen threshold and get alerted instantly. Each drop is automatically saved so you can track, review, and share with your doctor.

Trusted by Pros


What Our Customers Are Saying

Our Featured Accessories

SleepU™ Wrist Oxygen Monitor

$159.00 USD 

O2Ring™ Continuous Ring Oxygen Monitor

$159.00 USD 

Checkme™ O2 Wrist Oxygen Monitor

$199.00 USD

Wearing Style

Wrist-Worn

Ring

Wrist-Worn

Device & App Vibration Trigger

 SpO2

SpO2, Heart Rate

SpO2, Heart Rate

Alert Type

Vibration

Vibration

Vibration & Buzzing

Battery Life 

Up to 16 Hours

Up to 16 Hours

Up to 72 Hours

PC Software

Yes

Yes

Yes

Report Metrics

<90% Time,Drops over>4%,Drops per Hour, Avg. Lowest SpO2,HR,O2 Score

Same as left

Same as left

Historical Trends in App

O2 Score, Drops,Lowest SpO2,HR

Same as left

Same as left

App Data Update Interval 

4S

4S

2S

Apple Health

Yes

Yes

Yes

Why Choose Wellue for Oxygen Monitoring?

Medical-Grade Accuracy


Managing sleep apnea, COPD, or altitude? Precision matters — that's why Wellue uses transmission-based pulse oximetry, the same technology trusted in hospital monitors.

Track Oxygen Levels 

Continuously Overnight


Automatically track your oxygen levels, pulse rate, 

and movement throughout the night, with a detailed report ready when you wake up.

Low Oxygen Alerts with 

Event Tagging


Set your low oxygen threshold and get alerted instantly. Each drop is automatically saved so you can track, review, and share with your doctor.

Trusted by Pros


What Our Customers 

Are Saying

Our Featured Accessories