1. Support mobile phone system: IOS 8.0 or above / Android 4.4 or above 2. Main control: Nordic 52832+PD70 3. Waterproof grade: IP67 4. Display screen: 0.96 inch TFT color screen, resolution: 80*160dbi 5. Bluetooth version: 4.0 6. Material: PC+silicone 7. Battery: polymer battery 8. Battery capacity: 130 mAh 9. Standby time: 30 days, about 5 days in normal use 10. Charging method: charging with charging clip 11. Charging time: 2 hours 12. APP supports languages: Chinese, Traditional Chinese, English, Japanese, Korean, German, Russian, Spanish, Italian, French, Vietnamese, Portuguese, Persian (Arabic) 13 languages 13. The watch supports languages: Chinese, English 14. Functions: blood pressure monitoring, heart rate monitoring, sleep monitoring, step counting, SMS reminder, phone call reminder, distance, calorie monitoring, alarm clock reminder, touch button, countdown, shake photo, sedentary reminder, stopwatch, reject call, etc. 15. Product size: 270x17.0x11.0mm 16. Product weight: 25g