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.

Great product. The only issue is that the oxygen percentages can be out by a couple of percentage points. The readings sometimes fail to upload to my phone, thus it is hard to get all of the information that I need. The online cloud information is not as detailed as on the app. Otherwise, it does what it says on the can.

Good tool for evaluating sleep apnea.The SleepU Wrist Monitor is the perfect device for people with OSA or any health issues which require pulse and oxygen level monitoring. Wrist Monitor: Wrist band and finger monitor are both made of quality silicon material that does not irritate the skin. Wrist band is adjustable and can fit both me and my husband's wrist. Comfortable to wear, the finger monitor is sturdy and will not slip off. The differentiating feature of the SleepU is the ring device will vibrate when your oxygen level dips below your defined threshold. Most oxygen monitoring devices cannot do this. The vibration will wake you up so you can adjust your sleep position and breath better. ViHealth App: Wrist monitor will automatically sync with the app once the ring is taken off your finger. App is easy to use and provides useful daily data. User can view data in different time windows and drill down. PC Software: Intuitive UI with simple features to do the job. Wrist monitor can upload the data to the PC software, which allows export to csv and PDF so you can email the sleep report to your doctor. Overall I am very happy with the purchase and will wear this daily to track my sleep activity.

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.

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.

Accurate, reliable excellent sleep monitor.Arrived intact and on time, securely packaged. This monitor was bought for an elderly relative to monitor sleep apnea. I have used it on myself to demonstrate application etc. Firstly very simple to set up using the app and blue tooth. Charging cable usb provided easy to charge using laptop or a wall socket with Usb port. Previous data can be viewed off line through the app. The wrist strap needs to be securely placed on wrist using both the studs to totally secure the band. The finger probe can be placed on any finger or thumb for your personal best fit. The images show I used a soft velcro to secure the small cable to my thumb, otherwise the probe will slip off during sleep. I used it for 2 nights and the images show a screen shot of the results. You can view the full sleep time readings, or break down to as low as 30 minute window, very usefull if you want to breakdown an event during sleep. Excellent information to show your doctor etc. Also can wear during exercise, walking, treadmill etc. Very comfortable to wear, does not interrupt sleep at all. Would recommend for anyone wanting to monitor oxygen saturations and heart rate during sleep.

SleepU Wrist Monitor is a great device - Highly Recommend!My wife tells me that I have returned everything "except her" :) & she is right. I am a Type-A personality that sides to the pessimistic, but this monitor works very well. The internal clock gets out off, but if you sync it with your phone, it reestablishes the correct time. Ok, I have to complain--I would prefer a.m. & p.m. times instead of military time. This was a wise choice & purchase.