1. Main shell material: ABS+PC2. Shell size: 55x28x16mm3. Product weight: 31g4. Strap size: 205 mm5. Headphone material: silicone and plastic6. Headphone standby time: 7-15 days7. Bracelet standby time: 10 days8. Earphone usage time: 3 hours of talk/music9. Display: 1.14 TFT (color screen)10. Screen resolution: 135x24011. Bluetooth version: 5.012. Reminder: vibration13. Data storage: local/cloud server14. Support system: Android 4.4 and above; ios 8.0 and above15. Equipment requirements: Android4.0 and above; mobile Bluetooth 4.2, ios8.0 and above16. Battery type: polymer battery17. Battery capacity: 135 mAh18. Charging method: contact magnetic charging19. Working temperature: -5-45 degrees Celsius20. Charging voltage: 5V21. Headphone battery: 35mAh22. Charging time: about 1.5 hours23. Functions: Bluetooth headset, Bluetooth music, step counting, distance, calories, heart rate, blood pressure, information push (WeChat, QQ, SMS, Facebook, WhatsAPP, twiter, Instagram, etc.) running, rope skipping, sit-ups, smart alarm clock, Caller ID, sedentary reminder, raise your hand to turn on the screen, vibration reminder, shutdown, temperature measurement, remote camera