Function: step, mileage, calorie consumption, sleep detection, multi-sports, sedentary reminder, message reminder, call reminder, SMS reminder, shake a mobile phone photo, smart anti-lost, find bracelet, time synchronization
Display: curved screen 1.3inch TFT color screen 128*128
Button: single touch
Bluetooth: Bluetooth 4.0
Power interface: USB straight
System version: for Android 4.4 or above, for IOS 8.4 or above