1. Chip manufacturer: Realtek + Broadcom 2. Chip: RTL8762DT+BK3266 3. APP: RDFit 4. Compatible system: Android 5.1 (inclusive) or above, iOS8.0 (inclusive) or above 5. FLASH memory: RAM192KB + ROM128Mb 6. Screen Type: TFT 7. Screen size: 1.32 inches 8. Pixel: 360 x 360 9. Touch type: tempered glass explosion-proof full screen touch 10. BT: 5.1 BT low energy chip 11. Gravity sensor: support 12. Heart rate: TYHX 3300 13. Waterproof grade: IP68 14. Battery Type: Polymer Lithium Ion 15. Capacity: 260mAh 16. Charging method: wireless charging 17. Charging time: about 2.5 hours 18. Battery life: 2-3 days of use, 7 days of standby 19. Main functions: high-definition color screen touch display, exercise record (step counting, distance, calorie calculation), exercise mode, message push, information storage, heart rate monitoring, sleep monitoring, blood pressure measurement, blood oxygen saturation measurement, stopwatch, photo control , music control, full font language 20. APP software function: - Steps, sleep, heart rate, blood pressure, exercise data logging - Dial selection, message push, daily alarm clock, photo control, weather information, WeChat sports - Find the wristband, time format, do not disturb mode period, all-day heart rate test, turn your wrist to turn on the screen - Supported languages: Danish, Ukrainian, Russian, Bulgarian, Bokmal, Norwegian, Hindi, Indonesian, German, Italian, Czech, Japanese, Pashto, French, Polish, Thai , Swedish, Simplified Chinese, Traditional Chinese, Finnish, English, Dutch, Portuguese, Spanish, Vietnamese, Arabic, Kor. 21. The watch supports languages: English, Chinese, Japanese, Kor, German, French, Spanish, Arabic, Russian, Traditional, Ukrainian, Italian, Portuguese 22. Wristband size: total length 255mm, adjustable length 155-235mm 23. Appearance material: Main body: plastic + aluminum alloy; wristband: silicone + stainless steel 24. Band size (L x W x H): 44.8 x 37 x 10mm 25. Weight: 45.7g