1. Compatible system: Android5.0 (inclusive) or above, IOS9.0 (inclusive) or above 2. FLASH memory: 32Mbit 3. Screen size: 1.3 inches TFT-LCD 4. Pixel: 240*240 5. Bluetooth: BT5.0 6. Heart rate: photoelectric heart rate 7. Battery type: polymer lithium battery 8. Battery capacity: 170 mA 9. Charging method: USB magnetic 10. Waterproof rating: IP68 11. Charging time: 2H 12. Battery life: 8-13 days of use, 45 days of standby 13. Wristband size: total length 210MM, adjustable length 120-200MM 14. Appearance material: plastic 15. The bracelet supports displaying Chinese, English, Japanese, German, Italian, French, and Spanish languages. The APP supports dozens of countries and regions around the world. 16. 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 recording), software news push (Facebook, Twitter, line, WeChat, etc.), dial customization, call reminder, drinking reminder, sedentary reminder, text message reminder, female health, alarm clock reminder, remote camera, etc. 17. Size: 38.2x32x9.5mm