1. Display: 1.09 inch high-definition color screen, resolution: 240*2402. System requirements: Android 5.0 and above, IOS 10.0 and above3. Charging head specifications: charging 1A or less4. Charging time: 2H5. Bluetooth version: Bluetooth 5.06. Main control: NRF 528327. Memory: 512KB+64KB (Flash 64M)8. Battery capacity: 140 mAh9. Standby time: 30 days10. Working time: 3-5 days11. Waterproof rating: IP6812. Sensor: gravity sensor/heart rate sensor13. Push supports 20 languages: Traditional Chinese, Simplified Chinese, English, Japanese, Korean, German, Russian, Spanish, Italian, French, Romansiya, Portuguese, Arabic, Greek, Dutch, Polish , Turkish, Vietnamese, Thai, Indonesian14. Functions: heart rate detection, blood oxygen detection, time display, step counting, calories, distance, sleep time, switch machine display, standard exercise functions (walking/running/hiking/swing/rope skipping/exercise), sleep monitoring (sleeping) Time, sleep quality), call notification, message reminder, multi-language push, alarm clock reminder, task reminder, sedentary reminder, etc.15. Machine size: 39x39x10.6mm16. Weight: about 55gSpecification: Package Weight One Package Weight 0.17kgs / 0.37lb One Package Size 15cm * 11cm * 3cm / 5.91inch * 4.33inch * 1.18inch Qty per Carton 50 Carton Weight 10.00kgs / 22.05lb Carton Size 56cm * 32cm * 16cm / 22.05inch * 12.6inch * 6.3inch Loading Container 20GP: 930 cartons * 50 pcs = 46500 pcs40HQ: 2159 cartons * 50 pcs = 107950 pcs