CY900 2.1 inch HD Square Screen Smart Watch, Supports Bluetooth Call Health Monitoring Functions 1. 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. 2. 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 3. 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 Parameters 1. Chip: Jerry 7012 2. Android system: Support Android 4.4 and above, iOS system: Apple IOS10.0 and above 3. Heart rate sensor: VC30F (with liveness detection) 4. Bluetooth: Bluetooth 5.0 5. Waterproof level: IP67 6. Product process: zinc alloy + vacuum plating 7. Wristband material: silicone 8. Total length of wristband: 260mm 9. Screen size: 2.1-inch curved screen 10. Screen resolution: 240 x 296 11. Screen type: IPS full-view color screen 12. Screen material: glass 13. Battery type: lithium battery 14. Battery capacity: 230mAh 15. Battery model: 452027 polymer 16. Battery voltage: 3.7V 17. Battery life: 7-10 days of normal connection and 15-20 days of standby time (connection depends on personal use) 18. Charging method: magnetic charging 19. Charging time: about 2 hours 20. APP: CO FIT