Features:1. Independent GPS function, support GPS, GLONASS, A-GPS positioning, can record your movement track at any time.2. Real-time dynamic monitoring the heart rate data under the various states.3. 5ATM international waterproof grade, the totally enclosed structure is not afraid of rain, sweat, you can wear it for showering and swimming.4. Step counter, mileage record and calorie consumption calculation functions help you record your fitness condition.5. Automatically monitoring the whole sleep progress and the synchronous data function let you view your sleeping state.6. Light and soft curved surface, fit the wrist. Adjustable watchband, USB charging, convenient and portable.6. Light and soft curved surface, fit the wrist. Adjustable watchband, USB charging, convenient and portable.7. App message notification, suitable for QQ, Wechat, etc. Supports phone call reminder, sedentary reminder, weather forecast, anti-lost function, etc.Item Type: Smart WristbandMaterial: ABSColor: As Pictures ShownChip: nRF52832APP: YueFitCompatible System: for Android 4.4 and Above, for IOS 8.0 and AboveExternal FLASH Memory: 1MBScreen Type: PMOLEDScreen Size: 0.96inPixel: 96*96Touch Type: Single Touch + Slide Up and DownBT: BLE4.2WIFI: Not SupportNFC: Not SupportGravity Sensor: Three-axis Acceleration SensorGPS: M8030Battery Type: Polymer Lithium Ion BatteryCapacity: 125mAhCharging Mode: USB ChargingSize: 245*27*14mm/9.65*1.06*0.55in(Approx.) Package List:1 * Smart Wristband1 * Watchband1 * Instruction Book Notes:1. Please allow 0~1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.