Fangrui Product Details 1. Cy900 2.1 Inch Hd Square Screen Smart Watch, Supports Bluetooth Call Health Monitoring 2. Functions 3. Five Ui Menu Styles, Bluetooth Calls, Bluetooth Music Playback, Ai Voice Assistant, Offline Alipay, Breathing Training, Dial Push, Stopwatch, Brightness Adjustment, Multi-sports Mode, Sleep, Heart Rate, Blood Pressure, Blood Oxygen, Wallet, Business Card, Information, Remote Music, Remote Photography, Weather, Find Mobile Phone (connect To Mobile Phone), Password Protection, Calculator, Split Screen Display, Quick Widgets, Weather, Sports Track, Etc. 4. App Supports Languages: Chinese, English, German, Russian, Spanish, Portuguese, French, Japanese, Italian, Polish, Korean, Arabic, Persian, Thai, Vietnamese, Traditional Chinese, Danish, Greek, Latin, Romanian. Turkish, Hebrew, Czech, Indonesian 5. Device-side Supported Languages: English, Chinese, Traditional Chinese, Danish, Greek, Latin, Romanian, Turkish, Hebrew, Czech, Polish, Spanish, German, Russian, Portuguese, French, Japanese, Italian, Vietnamese, Korean, Arabic, Persian, Thai, Indonesian 6. Parameters 7. Chip: Jerry 7012 8. Android System: Support Android 4.4 And Above, Ios System: Apple Ios10.0 And Above 9. Heart Rate Sensor: Vc30f (with Liveness Detection) 10. Bluetooth: Bluetooth 5.0 11. Waterproof Level: Ip67 12. Product Process: Zinc Alloy + Vacuum Plating 13. Wristband Material: Silicone 14. Total Length Of Wristband: 260mm 15. Screen Size: 2.1-inch Curved Screen 16. Screen Resolution: 240 X 296 17. Screen Type: Ips Full-view Color Screen 18. Screen Material: Glass 19. Battery Type: Lithium Battery 20. Battery Capacity: 230mah 21. Battery Model: 452027 Polymer 22. Battery Voltage: 3.7v 23. Battery Life: 7-10 Days Of Normal Connection And 15-20 Days Of Standby Time (connection Depends On Personal Use) 24. Charging Method: Magnetic Charging 25. Charging Time: About 2 Hours 26. App: Co Fit