1. Battery capacity: 390mAh LiPo
2. Charging method: magnetic type
3. Theoretical charging time: about 2 hours
4. Waterproof rating: 5ATM, support swimming
5. Screen: 1.3 inch AMOLED screen, resolution: 360*360
6. Material: Corning Gorilla 3rd generation tempered glass, polymer material
7. Sensor: BioTrackerTM PPG biological tracking optical sensor, 3-axis acceleration sensor, geomagnetic sensor, ambient light sensor
8. Positioning: GPS + GLONASS
9. Bluetooth version: 5.0
10. Supported devices: Android 5.0 and above, iOS 10.0 and above
11. Daily use mode: 20 days (Heart rate is always on, sleep monitoring; 150 messages a day push bright screen display, wrist watch time 30 times, other operations 5 minutes; exercise 3 times a week, each turn on GPS running for 30 minutes )
12. Basic watch mode: 66 days (turn off Bluetooth, heart rate and other functions, raise your hand to brighten the screen 100 times a day)
13. GPS continuous working time: 20 hours (turn on GPS to record exercise track, turn on heart rate monitoring, and continue to display exercise page)
14. Functions: time/week display, heart rate monitoring, 14 exercise modes, GPS positioning, huami-PAI health assessment, step counting, sleep monitoring, call reminder, SMS reminder, check weather, alarm clock, find mobile phone, APP notification, mobile Payment etc.
15. Size: 47.7x47.7x13.5mm
16. Weight: about 58g
17. Accessories: watch, magnetic charging stand, manual
