1. USB charging easy to use
2. With 50 meters water resistance rating
3. Matching system: Android 4.4 and above iOS 9.0 and above
4. Battery capacity: 91mAh
5. Charging time: about 1.5 hours

Features
1. Heart rate monitoring blood oxygen monitoring sleep monitoring
2. Multiple sports modes (walking running cycling swimming free training rowing machine elliptical machine OTA after some sports)
3. Remote Photo
4. Sedentary reminders notifications and call reminders
5. Find your phone alarm clock timer
6. Control phone music playback