Great tool to monitor my health I have been able to use the information on the app to understand how things are working with my CPAP. Also, after a recent surgery to see how low my O2 level was during the night after the surgery. I wish you had put a mark on the outside of the right that shows it is positioned correctly for reading. I tried myself, but nothing seems to stay on the coating. If there was a mark on the outside of the ring that would be towards the palm of your hand it would be easy to know that it had not twisted around too far.

I ordered three rings I ordered three rings. One of the ring size was not accurate. There’s no way to return the ring. I was told that I cannot return the ring because I chose the size. Please note an American seven fits me perfect this particular rain fits on my pinky finger horrible horrible service

Great fitness tracker The ring's data collection and stats seem really accurate and the ring itself is really comfortable. I also like the long battery life and the portable charger. I only hope Ringconn brings out a more feminine design for the gals. Also it's far more affordable than the oura ring thank goodness.

Overall this ring is great! Overall this ring is great!! I do wish there was some sort of gauge /alert on the actual ring, when the battery is running low (vs having to check the app) Also more ‘activity’ measuring is a must! That is being worked on (i.e. measuring output of running, aerobic classes, Elliptical, Pilates, Biking….)

Overall pleased with the device. The measurement ring and actual ring were delivered on time and arrived as promised. Setup was easy. The software is easy to understand. Device has worked as promised since I got it. It's great for sleep profiling, and stress rate when I'm not exercising. HR is not tracked well during vigourous exercise.