1. Material: zinc alloy 2. Waterproof rating: IP67 3. Charging time: 1.5H 4. Life time: 3-5 days 5. Battery capacity: 3.7V/195mAh 6. Charging method: magnetic charging stand 7. Bluetooth version: BT 3.0/4.0 8. Screen: 1.75 inch IPS, 320*385 9. Compatible system: Android5.0 or above, IOS9.0 or above 10. Main functions: Bluetooth call, calendar, calculator, smart voice, find mobile phone, raise the hand to brighten the screen, heart rate monitoring, blood pressure monitoring, blood oxygen monitoring, exercise data, sleep monitoring, exercise mode (outdoor running, walking, climbing, indoor running) , alarm clock, information reminder, call history, remote control camera, Bluetooth music playback, sedentary reminder, etc. 11. APP languages: English, Arabic, Persian, Thai, Vietnamese, French, Czech, Turkish, Polish, Russian, Spanish, Portuguese, Greek 12. UI message push support: English, Arabic, Persian, Thai, Vietnamese, French, Czech, Turkish, Polish, Russian, Spanish, Portuguese, Greek 13. Wristband size: total length 226.6mm, width 21mm, watch size: 39.7x44.5x14mm