Wellue O2Ring Oxygen Monitor with Vibration Reminder -Bluetooth O2 Pulse Oximeter Rechargeable, Continuous Recording of SpO2 & PR, Blood Oxygen Saturation Tracker with Free APP & PC Reports

My wife began alerting me to snoring six months ago. I have friends and family members using CPAP , which I hate even to consider. However, my ENT doctor says sleep apnea cannot be ignored. The body needs oxygen, apparently :}. My ENT Doc set me up for a sleep study, which diagnosed a mild case of apnea. But it was just a one-night test. How can I commit to a lifetime remedy based on one result? I am left with a choice between a CPAP setup and a mouth appliance that will keep my airway open as I sleep. I opted for the mouth appliance. I just can't bear being hooked up to an airhose for the rest of my life. I am 65 years old. My mouthpiece will be ready in about two weeks. But how will I know if it works? I needed a before-and-after method of testing oxygen levels. I searched for a device similar to the one used for that overnight sleep study. I purchased the SleepO2 Wrist Recording Pulse Oximeter by EMAY because it had the same wrist recorder and finger sensor as the sleep clinic. It was a miserable failure due to an absurd finger sleeve. I sent it back and ordered this Wellue O2Ring set up. It was half the price, and it was super comfortable. There is no setup other than downloading the app. The sensor begins recording by just slipping the ring over the thumb. The sensor stops recording and sends the data to the app just by removing it. There is an easy-to-read graph and a score provided by each report so you can compare one night to the next. There is a variable vibration option that will let you know when your O2 level has dropped below a level of your choosing. This is a huge benefit since I want to be awakened if I'm not getting enough oxygen. The app lets you email a pdf copy of the night's record. I have been keeping printed copies so I can compare the results after receiving the mouth appliance. Finally, I had a question for tech support and received an answer the next day.

Works great, have had it over two years. There’s a trick to getting it to connect and download data to the app. I’m using an iPhone. Follow these steps while you’re still wearing it:1. Start the app. If it’s already running it’s usually best to restart the app. If you don’t know how to kill a running app (not just suspend it) use Google to learn how how.2. Click the Dashboard icon at the bottom. It should say it’s connected and starts logging O2 and pulse. If not then kill the app and repeat step 1.3. Click the History icon. Now you can remove the ring.4. Wait a few seconds you’ll see it countdown from 10 and then download your logged data.5. Click on the data in the history list to view it.

EDIT:I have now used it two weeks and have figured out alot of issues. The ring is not awesome at maintaining constant contact. If it goes for 10 seconds without contact it stops recording. It can only hold 4 readings at a time. That was a struggle at first. After trial and error and using the PI measurement on the dashboard, I found for sleeping it works best for me on my left thumb with the display turned in toward my palm. Essentially it is upside down on my thumb with the start button closest to my palm. I can get a PI of around 4 in that position and I believe that the natural cupping of my hands during sleep also holds it in a good position. Doing this has allowed me to have consistent readings of the full nights sleep. Another thing I have done that may help is I open the app and leave it running on dashboard when I sleep. So that has solved an initial huge complaint I had which was getting multiple readings in a night with useless data and missing half the night.Another issue was the vibration waking me up. If you deep dive settings vibration is adjustable. In fact alot of stuff is adjustable including to my delight, screen brightness. One downside for some people may be the red glow that comes off your finger. I dont see an easy way of defeating it unless maybe you wear a loose glove. I dont mind the glow myself. Its not particularly bright.After being able to obtain consistent readings for 1 week, I have been able to see the value in the app. It shows your O2 levels for the entire night. It shows the number of drops. It also breaks them down by percentage drop, as in drops of over 3% or 4% it also shows how much of the night you spent in the 95-100 range, 90-94 and under 90. It tells you your lowest sat and it gives you an overall average sat percentage. Finally, it uses all that data to assign you an O2 score. The score is then plotted on a graph along with drops and it gives you a good picture of your overall night time O2. It also has a place for you to leave notes. That has been super helpful. I find now that the app is well thought out in giving pertinent information in an easy format. ButIf you cant overcome the fit issue the app is useless.Obviously this can be used during the day. I have not used it that way as I do not need that data. However because of the poor contact and the way it ends the reading after 10 seconds of no contact, I doubt it will be super helpful for understanding O2 use during movement. In general any finger device is going to struggle with accuracy during movement. Cold hands are also another known issue for all finger sat monitors.So I would recommend the device for anyone needing to monitor their overnight O2 levels. I feel it is as accurate as you will find on a consumer level. It is however tricky to use and will take some trial and error initially. I do feel it is overpriced but the app is free. I have not looked into the app data collection. So I cannot speak to app privacy concerns. It can be used on either your phone or a PC. The app is not available for chrome book. It uses a micro sd charger. Meh. There is absolutely room for improvement on fit. They designed it so it could fit an array of finger sizes and it absolutely does. But it fits an array of finger sizes badly. I have had zero connection issues. It has connected to the app seamlessly and immediately each time and downloaded without issue every time. Frankly that is a bit of a feat in my opinion. But the absolute biggest area for improvement is better information on use from the developer.Previous review now edited:If it worked as stated it would be great. But it does not. I charged it fully and downloaded the app and connected the device to the app. The device fits on a finger or thumb. It turns on automatically and vibrates briefly. I had no trouble. In the app it shows 4 data sets, O2 saturation, heart rate, motion and PI%. The PI% is a measurement of how well it is detecting essentially. It will stream all that information via bluetooth on the app in a live feed. It does not however, keep that information. To do that you must manually save. That process is cumbersome, but achievable. You must remove the device from your finger, close the app and let the device sit until it auto shuts off. Then you have to turn the device on by putting it back on your finger, open the app, verify you are connected on the dashboard and then select the history icon. On the history page it will automatically download your last usuage history. It is available for viewing fairly quickly. I did this a few times on day one and felt everything was working. The device comes with low sat and hr alarms that can be accessed in settings. I disabled thoseThen comes night.It was comfortable for sleeping, however it vibrated and woke me up several times during the night. Upon waking in the morning I followed the download process and was pretty disappointed. I went to bed at midnight. It did not begin showing data until 3:48am. Between 3:48am and 7:04am it collected 4 readings. Apparently it had shut off/on 4 separate times (the vibration that woke me up). It remained on my hand all night. I am going to assume that I dont have the first 3 hours and 48 minutes because it only holds 4 readings at a time without downloading. I would further assume that simple sleeping positions defeated its ability to take adequate readings thus causing it to shut off. These are obvious design flaws in both hardware and software.This is an expensive device. The profit margin must be amazing. It has a sat/hr monitor similar to others you can buy on Amazon for $20. It has bluetooth like my $30 ear buds and a very basic app that displays data and has a very minor algorithm for assigning a 0-10 Oxygen score. A meaningless score unless it is tracked over time. I was unable to achieve any score as it apparently needs several hours of tracking in one continuous data set. Mine shut off after an hour or less.I do not recommend this device. It cannot monitor an entire nights sleep. Out of 7 hours it collected data for approximately 3 hours and 15 minutes in 4 seperate measurements. It also needlessly woke me up vibrating. I have not addressed its accuracy as it seems moot when it cannot collect the data that it displays. However in a very cursory comparison to a trusted device the heart rate appeared accurate and the saturation percentage varied plus or minus 2 percent. This is acceptable but not ideal. The battery life appears excellent and ample for overnight testing. Im giving it a 1 star rating because not only does it not work well it is expensive to boot. Oh for Pete's sake, I put it on my finger while typing this on my cell phone to see how it would function and IT SHUT OFF. It has perfect contact. I am sitting quietly holding a cell phone.