NEW IN THE BOX - NEVER USED ANDROID HEALTH SPORTS BRACELET Functions: Step pedometer, Calorie counter, Distance Track, Sleep monitor, Call remind, Alarm remind, Anti-lost, Camera remote control, Sedentary remind, etc. APP OS: ISO 7.0 & above; Android 4.3 & above SCREEN: .49 inches OLED LCD (resolution 64*32) WATERPROOF: IP65 BLUETOOTH VERSION: Bluetooth 4.0 ACCELERATION: 3-axis gravity sensor CHARGING: SpecificaitonsUSB charger STANDBY TIME: 20 days CAPACITY: 50mAh BATTERY: Li Battery Weight: 27 g STRAP MATERIAL: TPU (environmental silicone) USA charge cord included