1. Bluetooth version: BLE 4.0 2. Screen display: color screen bracelet (1.14 inch TFT LCD. resolution 135*240) 3. Battery capacity: 140 mAh 4. Standby time: 25-30 days, working time: 4-5 days 5. Charging interface: clip mode charging (with positive and negative directions) 6. Waterproof rating: IP67, waterproof, dustproof, sweatproof, wash your face, it will not affect the normal use of the bracelet. 7. Charging interface: clip mode charging (in both forward and reverse directions) 8. APP support language: Simplified Chinese, Traditional Chinese, English, Japanese, Korean, German, French, Portuguese, Spanish, Italian, Russian, Vietnamese 9. System requirements: Android 4.4 and above, IOS 8.0 or higher Bluetooth 4.0 10. Main functions: step, heart rate, b
