Display Screen size: 2.01 inch. Resolution: 240 × 296. HD Touch Screen. Waterproof rating: IPX4. Platform OS: Android 6.0 and more, iOS 9.0 and more. APP: VFit. Connectivity features Bluetooth version: 5.0 Technical  Specifications Material: Zinc Alloy. Main Control: AD7012A6. Touch Chip: H816D. Sensor: SC7A20. Flash: 64MB. Battery Battery Capacity: 200mAh. Battery life: About 7-10 Days. Charging Time: About 4 Hours. Charging method: Wireless Charging. Activity tracking function Sports Modes. Weather Forecast. Step Count, Calories, And Mileage… Heart Rate, Blood Oxygen, Blood Pressure… Sleep Monitoring. Bluetooth Calls. NFC Feature. Reminder Of Long Sitting. Stopwatch. Wrist Raise to Wake Screen. Supports Multiple Languages. Physiological Assistant. World Time: View Real-time in Different Time Zones Around the World. Power Off: Access To Turn Off the Watch. Restart: Access To Restart the Watch. Restore Factory Settings: Used To Resolve Software Issues by Restoring Default Settings.