1. All-day activity tracking: Accurately record all-day activities, such as distance, steps, and calories burned. 2. Receive phone calls, calendars, SMS and SNS notifications, never miss important information. 3. Multiple sports modes, anti-loss, music control. 4. Sedentary alarm, set a reminder of inactivity for a period of time. 5. Sleep monitoring, record and analyze your sleep status. 6. When you point your wrist towards you, the screen will automatically light up. 7. IP68 waterproof, no need to take it off for daily hand washing, sports or raining. 8. Requires iOS 8.0 Android 5.1 and above. 9. Bluetooth 5.0 10. Transmission range: about 10m 11. Battery: Lithium battery 220mAh 12. Charging method: magnetic base charging 13.1.75 inches IPS screen, 320 x 385 pixels 14. Product size: 44x38x10.7mm