1. Bluetooth version: 5.1 2. Chip: Goodix GR5515 3. Waterproof: 30 meters 4. Screen size: 1.3 inches 5. Screen type: 2.5D glass + IPS full circle color touch screen 6. Compatible operating system: Android 4.4 / iOS 9.0 and above 7. Message push language: Chinese, Japanese, Korean, Latin, Cyrillic; Latin includes: (English, French, Spanish, Portuguese, German, Dutch, Vietnamese, Northern Europe, Central Europe, Southern European Italian, Southeast Asia, Africa); Siri Irvine includes: (Russia, Eastern Europe, Asia), covering 150 countries 8. Sensors: heart rate sensor, proximity sensor, accelerometer 9. Battery type: lithium polymer battery 10. Battery capacity: 180 mA 11. Standby time: 30 days (power saving scenario); 18 days (typical use scenario) 12. Charging time: about 1.5 hours 13. Material: metal+2.5D glass+silicone 14. Function: All-day heart rate monitoring (abnormal heart rate alarm), blood pressure monitoring, 10 goal-based exercises, female cycle tracker, sleep quality monitoring, step tracking, calorie consumption tracking, daily step goal, real-time pace And distance, goal celebration, mobile reminder, smartphone notification, one-button rejection/mute, weather forecast, countdown and stopwatch, alarm clock, multi-dial, find phone, turn wrist detection, music control, shake photo, etc. 15. Size: 45x45x11.6mm 16. Weight: 51 g
