1. Main shell material: ABS+PC 2. Shell size: 55x28x16mm 3. Product weight: 31g 4. Strap size: 205 mm 5. Headphone material: silicone and plastic 6. Headphone standby time: 7-15 days 7. Bracelet standby time: 10 days 8. Earphone usage time: 3 hours of talk/music 9. Display: 1.14 TFT (color screen) 10. Screen resolution: 135x240 11. Bluetooth version: 5.0 12. Reminder: vibration 13. Data storage: local/cloud server 14. Support system: Android 4.4 and above; ios 8.0 and above 15. Equipment requirements: Android4.0 and above; mobile Bluetooth 4.2, ios8.0 and above 16. Battery type: polymer battery 17. Battery capacity: 135 mAh 18. Charging method: contact magnetic charging 19. Working temperature: -5-45 degrees Celsius 20. Charging voltage: 5V 21. Headphone battery: 35mAh 22. Charging time: about 1.5 hours 23. 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
