Fangrui Product Details 1. Cy22 1.47 Inch Silicone Strap Ip67 Waterproof Smart Watch, Support Heart Rate Blood Pressure 2. Compatible Systems: 3. Android System: Android 4.4 And Above 4. Ios System: Ios10.0 And Above 5. Chip: Jerry 7012 (single Chip Dual Mode, Iosandroid Single Connection), 6. Functions: Three Ui Menu Styles, Offline Alipay, Breathing Training, Dial Push, Stopwatch, Brightness Adjustment, Multi-sports Mode, Sleep, Heart Rate, Blood Pressure, Blood Oxygen, Information, Remote Music, Remote Photography, Weather, Find Mobile Phone (connect To Mobile Phone) Calculator, Split Screen Display, Quick Widgets, Weather, Sports Track, Etc. 7. Language: 8. App Language: Chinese, English, German, Russian, Spanish, Portuguese, French, Japanese, Italian, Polish, Korean, Arabic, Persian, Thai, Vietnamese, Traditional Chinese, Danish, Greek, Latin, Romanian. Turkish, Hebrew, Czech 9. Device Language: English, Chinese, Traditional Chinese, Danish, Greek, Latin, Romanian, Turkish, Hebrew, Czech, Polish, 10. Spanish, German, Russian, Portuguese, French, Japanese, Italian, Vietnamese, Korean, Arabic, Persian, Thai 11. App: Co Fit 12. Heart Rate Sensor: Vc30f (with Liveness Detection) 13. Bluetooth: Bluetooth 5.0 14. Waterproof Level: Ip67 15. Craftsmanship: Zinc Alloy Craftsmanship 16. Net Weight: 21g 17. Screen Size: 1.47 Inches (curved Screen), Resolution: 172x320 18. Screen Type: Ips Full-view Color Screen, Material: Glass 19. Total Length Of Wristband: 260 Mm 20. Wristband Material: Silicone 21. Battery: 22. Type: Pure Cobalt Battery + Precision Protection Board 23. Model: 502020 Polymer 24. Voltage: 3.7v 25. Capacity: 180mah 26. Battery Life: 7-10 Days In Normal Connection, 15-20 Days In Standby Mode 27. Charging Method: Magnetic Charging 28. Charging Time: About 2 Hours