Husband loves his. I got it for him as a gift. He said it is accurate and comfortable

I bought this ring at an affordable prices. after downloading the app and pairing the ring, i was able to get vitals stats and other health related testing and results. for this price it does what i bought it for saving hundreds of dollars for the big brand names rings.

I like it but if I wear it while sleeping, when do I charge it?

It doesn't sync up properly or store the data, pretty much a waste of money

I tried all of the many steps involved, needed to have my daughter try to get it to stay linked, by the time we realized it was helpless it was past 30 days.