R12M SIZE 22 Smart Ring
It took a while to get to me, I got R12M SIZE 22 Smart Ring the size is good. if you do a lot of hand movements it will count it as steeps, There is no way to set your sleep time in the LuckRing app, which is bad. It starts very night at 2200 I'm Asleep by 2000 so that is bad. The App is very basic to say the least. I'm sure that there are better rings out there but for $29 it lets me know my SPO2