The ring looks good and is lightweight. i never take it off, even at work (sweat, shocks, vibrations), during showers, or while washing dishes (hot water, detergent), and it doesn't seem to mind at all. after a week of use, it still looks like new. i don't know about the accuracy of the measurements (hr, bp, spo2) as i have no way to verify it, but the sleep monitoring seems to work well. battery life is also fine (from 100% to 40% takes about 3 days) and charging from 40% to 100% takes around 30 to 40 minutes. pairing with the phone (and the app) was quick and simple. the app is nice, has no ads, and the records are quite detailed. the czech language in the app is terrible, but the english version is perfectly fine. the ring stores the data and synchronizes with the app once in a while when it's in range. sometimes the sync doesn't happen immediately after opening the app, but it can be forced by swiping down. overall, i am satisfied with the ring.
