1. Compatible system: Android5.0 (inclusive) or above, IOS9.0 (inclusive) or above 2. FLASH memory: 64Mbit 3. Screen size: 1.7 inches TFT-LCD 4. Pixel: 240*280 5. Bluetooth: BT5.0 6. Heart rate: photoelectric heart rate 7. Battery type: polymer lithium battery 8. Capacity: 230 mAh 9. Charging method: USB magnetic 10. Waterproof rating: IP68 11. Charging time: 2.5H 12. Battery life: 6-13 days of use, 45 days of standby 13. Wristband size: total length 210MM, adjustable length 120-200MM 14. Appearance material: zinc alloy 15. The bracelet supports displaying simplified Chinese, traditional Chinese, English, French, German, Italian, Japanese, Spanish, Russian, Dutch 16. Function: health monitoring (heart rate, blood pressure, blood oxygen, sedentary reminder, drinking reminder, sleep monitoring, female menstrual reminder, metot, breathing training, S80-PRO with body temperature), exercise monitoring (step counting, calories, Distance, 16 sports modes), message reminder display, incoming call reminder, camera control, turn on the wrist screen, alarm clock, custom dial, brightness adjustment, weather, stopwatch, countdown, music control, software message push (Facebook, WeChat, Twitter , WhatsApp, Instagram, line, QQ, Messager, etc.) 17. Size: 42.5x36x9.6mm