DT3 Max 1.36 inch Steel Watchband Color Screen Smart Watch About Product 1. Battery capacity: 280mAh 2. Waterproof level: IP68 waterproof 3. Bluetooth version : Dual Bluetooth 5.0 4. Resolution:390*390 5. Charging method:Wireless charger 6. System: Android system 4.4 version or above,iOS system 10.0 version or above 7. Battery Life: 4-5 days 8. Standby Time: 10-15 days 9. APP:Wearpro 10. Device 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 11. APP support languages:Chinese, English, German, Russian, Spanish, Portuguese, French, Japanese, Italian, Polish, Korean, Arabic, Persian, Thai, Vietnamese, Traditional Chinese, Greek, Romanian. Turkish, Hebrew, Czech Function 1. NFC access control,bluetooth call,heart rate monitoring,blood pressure monitoring,blood oxygen monitoring 2. Step,distance,calorie 3. Sleep monitoring (sleep time, sleep quality) 4. Multi-sport modes:Walking, running, cycling, badminton,basketball,swimming 5. Breathe training,ECG monitoring,GPS motion track,Alipay two-way payment,menstrual cycle reminder 6. AI voice assistant,double-tap to brighten the screen,QR code,bluetooth music,custom watch faces 7.Stopwatch,brightness adjustment,remote camera,weather display,search phone,password protection,calculator,massager