How to wear: WristbandWrist strap material: siliconeFunction: Heart rate monitoringColor: black, silver gray  F6 function:Model : F6 smart watchPlatform : Nordic NRF51822Product Type : Smart WatchCharacteristicBluetooth Push: Support (call, SMS, third-party application reminder)Heart rate detection : Support (second generation dynamic heart rate monitoring, monitoring heart rate throughout the day)Pedometer: support (exercise step, calorie consumption, exercise mileage record)Data Synchronization: Support with Android System and IOS SystemSleep monitoring : supportAlarm clock : SupportPhone alert : SupportBluetooth function and version: Bluetooth 4.0Vibration: supportRemote photo taking: supportG-SENSOR : SupportMulti-sport mode: running, cycling, basketball, swimming, table tennis, badminton, climbing, footballWaterproof : IP68 waterproof (50 meters waterproof)HardwareStrap : TPU strap, replaceable strapCharger: strong magnetic charging interfaceGreen product : CE certifiedColor : black, silverHome screen: 0.96-inch OLED displaySide button : Support