1. Material: aluminum alloy, PC, steel/leather, electronic components 2. Functions: multiple sports mode tracking, step counting, heart rate monitoring, blood pressure measurement, sleep monitoring, blood oxygen detection, body temperature detection, smart reminder, remote control selfie, information push, Bluetooth call 3. Applicable system: Android 5.0 and above, IOS 10.0 and above 4. Supported languages: Chinese, English (default), German, French, Italian, Spanish, Japanese, Polish, Russian, Portuguese, Vietnamese, Korean, Arabic, Hebrew, Thai, Croatian, Turkish , Czech, Dutch + Indonesian, Malay, Finnish, Greek, Romanian 5. Screen size: 1.32 inches (IPS screen) 6. Screen resolution: 360 x 360pixel 7. Bluetooth version: 5.0 8. Wireless distance: 5-10m (inclusive) 9. Body memory: RAM: 256KB+ROM: 192KB, external expansion 64Mb FLASH 10. Battery capacity: 230mAh lithium battery 11. Charging time: 2 hours 12. Working hours: 5-7 days 13. Standby time: 30 days 14. Operation mode: touch + button 15. Waterproof grade: IP67 16. Using 1.32-inch IPS screen + high hardness non-slip glass, wear-resistant and clear 17. The dial is made of zinc alloy metal, which has strong corrosion resistance and good texture 18. Dimensions: Dial: 4.6 x 1.18 cm, Circumference: 22 cm 19. Product net weight: 52.8 grams