1. System requirements: Android 5.0 and above, IOS 9.0 or above 2. Bluetooth version: BLE 4.0 3. Memory: 64M 4. Battery capacity: 200 mAh 5. Waterproof rating: IP67 6. APP Support Language: Chinese (Simplified, Traditional), Japanese, English, French, German, Italian, Spanish, Russian, Portuguese, Korean, Malaysian 7. Bracelet support language: Chinese (Simplified), English 8. Body material: glass lens + zinc alloy middle frame + plastic bottom case 9. Strap: silicone strap 10. Charging method : magnetic charging 11. Heart rate detection, blood pressure detection (heart rate monitoring) 12. Time/clock display, step, calories, distance, sleep time, stopwatch, find phone, brightness adjustment, 5 dial options 13. Standard sports function (step, distance, calories) multi-sports mode (climbing, walking, basketball, running, table tennis, cycling, swimming, badminton, football) 14. Sleep monitoring (sleep time, sleep quality, day and night time) 15. Call reminder, SMS reminder, QQ reminder, WeChat reminder, Skype, facebook, whatsApp reminder. (Save 3 historical message records) 16. Find your phone, find the bracelet, stopwatch, alarm clock / medication / meeting / sedentary / drinking water reminder 17. GPS motion track, screen brightness adjustment 18. Remote control photo (shake a photo) 19. Movement of relatives and friends, mutual measurement of measurement data 20. Size: 46.9x34.1x12.3mm 21. Weight:41.6g