1. Battery capacity: 260mAh 2. Waterproof level: IP67 waterproof 3. Bluetooth version : Bluetooth 5.1 4. Resolution:240*286 5. Charging method:Magnetic charging 6. Life time:2-3 days of use, 7 days of standby 7. Charging time: About 2.5H 8. System: Android system 4.4 version or above,iOS system 8.0 version or above 9. Smart watch languages: Danish, Ukrainian, Russian, Bulgarian, Bokmal, Norwegian, Hindi, Indonesian, German, Italian, Czech, Japanese, Pushto, French, Polish, Thai, Swedish, Simplified Chinese, Traditional Chinese, Finnish, English, Dutch, Portuguese, Spanish, Vietnamese, Arabic, Korean Function: 1. Bluetooth call,heart rate monitoring,blood pressure monitoring,blood oxygen monitoring 2. Step,distance,calorie 3. Sleep monitoring (sleep duration, sleep quality) 4. Social APP message reminder:FacebookWhatsAppTwitterlineWechatmailInstagram 5. Multi-sport modes:123 exercise modes 6. AI voice assistant,dial selection, message push, daily alarm clock, photo control, weather information 7. Find bracelet, time format, do not disturb mode time, all-day heart rate test, turn the wrist bright screen