Wellue WearO2 Wearable Oxygen Monitor Bluetooth Pulse Meter with Vibration, Free APP, Continuously Track O2 Level & Heart Rate

Easy to operate once you get the hang of it, and it works well once you get it to fit snugly. The orange ring system makes it seem a bit cheap, but it does work. At first, I couldn't find the charging port, and I was leary of lifting the orange ring to find it. Finally I got a magnifying glass and found the usb symbol on the orange ring showing me where to lift it.While using it, it would often shut off during the night because I would move and break the connection. I wouldn't call my fingers small, more just the normal size for your average woman. So, to get it to fit more snugly, I took the plastic cap from a Dentek brush pick (see pic) and slid it into the part of the ring there to adjust the fit. This worked. Because the plastic cap is sort of long, it kept my finger somewhat straight. The ring fit much better and keeping my finger straight also helped hold the connection. There are probably a few things you might have at home that would do the same thing.Overall, I'm very happy with my purchase. It is helping me see what is going on during the night, with and without my C-pap. I was hoping to discover that I didn't really need my cpap, but now after seeing the difference with it and without it on, I do need it. The reports that it produces are sufficient for my purposes. I would recommend it if you don't intend to use it a whole lot.UPDATE: Used this device every night for almost exactly 6 months, before it would no longer download to the phone app. If I had it to do over again, and knew how useful the device would be, I would probably spend a little more to get one that would last longer.2ND UPDATE: I contacted the Wellue company using the email address listed on the warranty card that came with it and they responded shortly after. They had me do a factory reset and now it's working fine. I would recommend this product and this company.

I have sleep apnea and the alarm feature on low O2 proves to be helpful and reliable when I use overnight. The Bluetooth connection is easy because you don't pair it to your device but only have to enable Bluetooth to work. The charger port is hidden under the back section of the color. I charge every afternoon so it easily works overnight as well as covering the day. Just be sure to download the right app. The instructions are clear and specify but I got several options on my Apple App store and I had the wrong app the first time. Follow the directions exactly and there is no problem. It reports almost the same as a standard clip-on O2 monitor so it seems accurate for the type. The app is completely free and there was no attempt at an upsell for premium service or to sell a feature that was promised or to get more features on the app reporting so the device is all-inclusive: monitor for O2 and pulse rate, low O2 vibrator for an alert, charger cable with USB connection, full charting with charting history session by session with chart window for a week, month, or year results grouped with detail session report apparently including all history. I finger strap was surprisingly comfortable after about 30 minutes..

Concerned what Fitbit was reporting regarding highs and low oxygen and this device tracks more detailed high and low and identifies the numbers of o2 drops per hour and whether over 3 or 4%. It was hard to get it on my thumb (very large hands) and seemed a little fragile based on stretching it to the limit to fit my fingers. Otherwise when I remember to charge it, it works great maintaining stats all night and d/l to the app every morning. I like ut

Cheap junk. I did not use it much but with a year, the cover starting coming off the unit. I had to super glue it. And it’s a pain when the covers comes off as everything fall out. Then it started giving erratic readings or would take one reading get stuck on that reading. Really was a waste of time. Has to be a better way then this to measure your oxygen and pulse.

The product itself is basically ok. Very simple but when I put it on, it was hit/miss as to getting a reading. On one finger it would show 99% but on the next finger it would show 93%. The strap is basically like a rubber bank with no ability to adjust for fat fingers which is why I think that one finger shows one level and another a different one.It was on very tight with the lower level and after a while I felt I needed to take it off because it was starting to hurt. And I am concerned about what happens over time as the rubber, like all rubber bands, starts to crack and finally breaks. I see no way of replacing the band so I would need to throw it away and get a new one. Great for maker, not for consumer.Finally, the software was very limiting. Basically it was slapped together with no thought about providing any real information about the readings other than highest, lowest and average with a graph for the O2 and PR which was hard to read. I have an old meter that provides all sorts of stats on the readings for long sessions like overnight. While this one stays on comfortably, the report is worthless except for basic information of how your levels go up and down.With my cell phone it kept crashing and I would need to reboot the phone. The bluetooth is totally different than normal BT connections as you don't actually pair the devices but the software to the device. Overall, I decided that is was actually not better than my old device so I returned it.

I've been using this product for about a month. I am very impressed. I wear it overnight to track the effectiveness of my sleep apnea mouthpiece. While the product isn't perfect, I can't imagine being more satisfied for the price point. It tracks my blood oxygen, pulse, and movement. I can download the data to a spreadsheet to provide to someone else for analysis if I wish, or just rely on the built in dashboard. While I understand that this is not a medical grade device, it at least provides me guidance and lets me track my relative sleep quality so I can determine if/when I need to see a professional. Would definitely buy again.