1. Functions: Support GPT, NFC access control, GPS positioning, AI voice assistant, Alipay payment code, social QR code, Bluetooth calling, Bluetooth music playback, breathing training, Meteo, massive dials, custom dial push, stopwatch, Brightness adjustment, multi-sport mode (indoor and outdoor), sleep, real heart rate, blood pressure, blood oxygen, information push, remote photography, real-time weather, find mobile phone (connected to mobile phone), password protection, calculator, split-screen display, shortcut Widgets, weather, alarm clock, multiple menu styles, compass, dock 2. APP supports languages: Simplified Chinese, Traditional Chinese, English, Dutch, German, Russian, Thai, Spanish, Portuguese, French, Japanese, Italian, Polish, Korean, Arabic, Persian, Vietnamese, Danish, Turkish, Hebrew, Indonesian, Greek, Czech, Malay 3. The watch supports languages: Simplified Chinese (default), English, Russian, Spanish, German, French, Portuguese, Polish, Turkish, Hebrew, Arabic, Indonesian, Vietnamese, Thai, Persian ,Malay. Parameters:1. APP: Wearfit Pro 2. Chip: SF32LB551 (Sich)3. Heart rate sensor: HRS33014. Andiord system: supports Android 6.0 and above 5. iOS system: Apple IOS 8.4 or above 6. Bluetooth: Bluetooth 5.0+Bluetooth 3.07. Waterproof level: IP688. Product technology: zinc alloy + IML9. Screen size: 2.1 inches 10. Screen resolution: 320 x 39011. Screen type: IPS full-viewing color screen, narrow bezel and black border 1.3MM12. Touch material: OGS+Panda explosion-proof glass 13. Battery voltage: 3.7V14. Battery capacity: 380m. Ah 15. Battery type: lithium battery 16. Battery life: 3-5 days of normal connected use, 60 days of standby 17. Charging method: supports wireless charging 18. Charging time: about 2.5 hours 19. Total length of wristband: 150-260mm 20. Wristband material: silicone