1. Main control chip: RLC8762C2. Waterproof level: IP683. Compatible system: Android 4.4 and above, iOS 8.2 and above4. Screen size: 1.08 inch high-definition TFT color screen5. Bluetooth: 5.06. Battery capacity: 105mAh7. Charging method: magnetic DC charging8. Battery life: 5-10 days of use, 20-30 days of standby9. Data storage: 3 months10. Material: shell middle frame: metal alloy, front shell: PC, rear shell: ABS+PC11. The wristband terminal supports languages: Chinese, English, Korean, Japanese, German, Spanish, French, Italian, Portuguese, Arabic, Russian, Dutch, Hindi, Polish12. App supported languages: Chinese, Russian, Turkish, German, Italian, Japanese, French, Polish, Traditional, English, Dutch, Portuguese, Spanish, Arabic, Korean13. Functions: multi-sports modes (running, cycling, swimming, badminton), heart rate monitoring, blood pressure monitoring, blood oxygen monitoring, sleep monitoring, weather forecast, call rejection, step counting, calories, distance, shaking photo, long time Sit reminder, menstrual cycle reminder, etc.14. Bracelet size: 26x2.3x1.1cm, weight: 138g15. Packing list: bracelet, charging cable, manual, ear batch, packing box, certificate of conformity