1. Material: 2.5D tempered glass, zinc alloy, TPU 2. Battery capacity: 200mAH 3. Resolution: 240*240 4. System requirements: Android 4.4 or above, IOS8.4 or above, For iPhone 5S or above 5. Charging method: magnetic charging 2PIN (anti-reverse connection) 6. Functions: heart rate, blood pressure and blood oxygen monitoring, sleep monitoring, Bluetooth call, sedentary reminder, call reminder, alarm clock, watch watch, mobile phone search, information push, etc. 7. Android support languages: Simplified Chinese, Traditional Chinese, English, Japanese, French, German, Russian, Arabic, Spanish, Portuguese, Italian, Polish, Indonesian, Thai 8. IOS support languages: Simplified Chinese, Traditional Chinese, English, Japanese, French, German, Russian, Arabic, Spanish, Portuguese, Italian, Polish, Indonesian, Thai 9. Size: 44x38x12.5mm