Wellue O2Ring-S Oxygen Monitor with Vibration Reminder, Bluetooth Pulse Oximeter Tracks SPO2 and Pulse Rate, 24 hrs Battery Life, 4*10 Hours Built-in Memory, Rechargeable Pulse Ox with Free PC & APP

This is an excellent product that does the job flawlessly. It reads and records my oxygen levels, heartrate, and movement in one-second intervals, unlike other wearables that record less frequently or require another device to record the data. I put it on and it starts recording automatically. Downloading the data to the app over bluetooth is automatic, once the app is open and recording stops. The battery life is good, usually enough for at least two sleep sessions. There are only three issues that I have: > The cord that comes with this device is NOT a standard USB-C cord. The device will not charge or transfer data with a standard cord. I have to use the one that came with the device. > The app uses private storage on my phone to write files, which I then have to transfer to my PC, one at a time, using the share function in the app to store the file on my phone, then my phone to my laptop. (There is a way to sync with my PC directly, but this is only from the wearable to my PC using that cable and Wellue's proprietary software.) > This last one is really nitpicky, but there is no way to see the battery level in-app or on the device, except by a very small battery icon. No battery percentage is shown, so it is difficult to know whether there is enough charge for another sleep session. PS: The customer service department deserves a bit of praise for handling an issue I had with my unit where it stopped responding to the button on the device. All they required was proof of purchase and a video showing the problem, along with a photo of the serial number on the device and they shipped me a new one in two days! Amazing!

We love the O2Ring-S Oxygen Monitor. My wife has a lung disease and we can tell ahead of time when she needs to sit down and rest or increase her oxygen on her consentrator. We had an issue with it months later but customer service was awesome and got a replacement in a timely matter after. Actually it was the best customer service I have ever dealt with! This is the 24 hour model but we also have the 16 hour model that we use for a back up while on vacation plus wanted one to monitor during the night occasionally so 16 hour one comes in handy the next day why 24 hour one charges. Later we'll probably buy another 24 hour one to switch off every day. My wife says it is comfortable to wear and never had an issue doing so. Every morning I download the data to my cell phone and then to my computer. That also helps to see monitor what she shouldn't be doing or take more breaks if she does. Needless to say, we are very happy with the product and the company's service department. I wouldn't have a problem buying again because it's a great tool on help keeping my wife safe! Here is a small sample on what we see in my downloads every morning on my cell phone.

I bought the O2RingS to track overnight oxygen and heart rate levels, and overall it delivers very well on its promises. What works well: - Accurate tracking: The O2RingS samples 200 times per second and stores one data point per second, which is much more frequent than the original O2Ring that stores one data point per 4 seconds. This makes it highly precise for overnight monitoring of oxygen saturation, heart rate. It also tracks movement, but it didn't indicate a lot of movement even when I had to get out of bed during the night. - Simple operation: Just slip it on and it starts recording automatically. Syncing with the ViHealth app is quick and reliable over Bluetooth. Data can also be synced to a PC using the included USB cable and the dedicated PC application. There is no difference in functionality between the mobile and PC apps. - Vibration alerts: If oxygen levels drop below a threshold, the vibration is noticeable but not overly disruptive—useful for sleep apnea monitoring. Things to improve: -Charging cable: Although the device uses a USB-C port, it does not support standard USB-C chargers or cables. You must use the included proprietary cable. Losing it could be problematic. - Comfort & design: The “one-size-fits-all” approach isn’t ideal—on smaller fingers it feels loose, on larger ones tight. Bottom line: If your priority is accurate, high-resolution tracking of oxygen and heart rate, the O2RingS is excellent. The automatic recording and reliable app integration make it easy to use nightly. However, the comfort/design quirks and reliance on a proprietary charging cable are definite downsides. For me, it’s a solid 4-star device—worth it if you need detailed oxygen data, but not perfect out of the box.