This smart ring features a high accuracy heart rate and blood oxygen monitoring system, with multi sports modes and 5ATM waterproof capability. It has a LED display screen with 3 adjustable brightness levels and supports touch button control. The ring is compatible with Android 9.0 and above, and Apple IOS 10.0 and above, and can be connected via Bluetooth 5.0. It also supports Fota upgrade and has a theoretical standby time of 16-20 days.