Function:  Screen display band (0.96 inn TFT ).  Heart rate detection.  Time, step, distance and calorie display on the screen.  Standard function (step, distance, calories).  Sleep monitoring (sleep time, sleep quality).  Incoming remind, Message push.  Anti-lost remind (phones beyond the scope will remind).  Alarm clock remind.  Task remind.  Activities remind.  moving target setting.  moving information sharing.  SUOTA function, through the APK/APP  upgrade bracelet firmware “yoho” APP in google play and app store.  Synchronous data to mobile applications.  Android and apple application in sync.     Specifications:  System requirements: Android 4.4 and above, IOS 8.0 and above, Bluetooth 4.0 support.  Bluetooth version: BLE 4.0.  Bluetooth chip: X100. Heart rate module.  Operating current: About 50 0uA.  Screen size: 0.96 inches.  resolution: 80*160.  Battery capacity: 90mA.  Standby time: About 15 days.  Working time: About 3-4 Days.  Motor: vibration remind.  Charging interface: Plunger contact interface.  Waterproof level: IP67.  Sensor: Gravitational acceleration sensor.  weight: 25g.      Package include:  1 X Smart Bracelet.  1 X User Manual