The RingConn Gen 2 packs plenty of health-tracking features and has the longest battery life I've seen on a smart ring. It's $91 off for day one of Prime Day,



Source: ADnet
Source Link: https://www.zdnet.com/article/finally-a-smart-ring-that-rivals-my-oura-4-but-doesnt-have-subscription-fees-and-its-on-sale/