1. Chip: Realtek 8763EWE2. Compatible systems: Android 4.4, IOS 9.0 and above3. RAM: 160KB4. External storage FLASH: 1285. Display: 1.39 inches6. Pixels: 360 x 3607. Touch type: full-screen touch8. Bluetooth version: 5.0 BLE9. Transmission range: about 10M10. Gravity sensor: Yes11. Heart rate: Tianyi Hexin 3605 high-precision heart rate module12. Motor: welding13. Battery capacity: 250mAh14. Charging method: magnetic suction15. LED indicator: Yes16. Waterproof level: IP6717. Touch screen material: tempered glass18. Surface treatment process: zinc alloy19. Strap material: silicone strap/steel strap20. Main functions: call reminder push, SMS reminder push, WeChat reminder push, QQ reminder push, exercise record (step counting, mileage, etc.), track map, sleep monitoring, sedentary reminder, calorie calculation, stopwatch, low battery reminder, raise your hand to light up the screen, fast charging, ultra-low power consumption, heart rate, blood pressure, vibration, exercise mode, remote photography, music control, smart alarm, weather forecast, high-definition large screen, multi-dial switching, WeChat sports, call21. Bracelet language: Simplified Chinese, English, French, Spanish, Japanese, Russian, Portuguese22. Mobile APP language: Chinese, Traditional Chinese, English, German, Korean, Spanish, Japanese, French, Russian, Arabic, Ukrainian, Italian, Portuguese23. Watch width: 45.5mm24. Watch thickness: 9.8mm25. Watch length: 53mm26. Product weight: 44g for tape, 55g for steel strap