1. Compatible system: Android5.0 (inclusive) or above, IOS8.0 (inclusive) or above 2. FLASH memory: 32Mbit 3. Screen size: 0.96 inch TFT-LCD 4. Pixel: 80RGB*160 5. Bluetooth: BT5.0 6. Heart rate: HRS3300 7. Battery type: polymer lithium battery 8. Capacity: 105mAh 9. Charging method: USB 10. Waterproof rating: IP68 11. Charging time: about 2H 12. Battery life: 7-13 days of use, 45 days of standby 13. Wristband size: total length 210MM, adjustable length 120-200MM 14. Appearance material: plastic + TPU 15. Functions: health monitoring (sleep monitoring, 24-hour heart rate monitoring, blood pressure, blood oxygen, body temperature), exercise monitoring (step counting, calorie consumption, distance, 16 exercise modes, GPS track record), dial customization, call reminder , Drinking water reminder, sedentary reminder, SMS reminder, women's health, alarm clock reminder, remote camera, software news push (Facebook, Twitter, line, WeChat, etc.) 16. The bracelet supports displaying Chinese, English, Japanese, German, Italian, French, and Spanish languages. The APP supports dozens of countries and regions around the world. 17. Size: 40.4x20.1x10.5mm