About Product1. Battery capacity: 200mAh2. Waterproof level: IP68 waterproof3. Bluetooth version : Bluetooth 5.04. Resolution:240*2405. Charging method:Magnetic charging6. System: Android system 4.4 version or above,iOS system 8.0 version or above7. APP Name: Tefiti8. Standby time: 20 to 25 days9. Usage time: About 7 days10. APP supports languages:Android: English, Arabic, Czech, French, German, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese, Turkish, Romanian, HindiiOS: English, Arabic, Czech, French, German, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese11. UI supports languages:Chinese, English, Korean, Japanese, German, Spanish, French, Italian, Portuguese, Arabic, Russian, Dutch, Indonesian, Hindi, Polish, TurkishFunction1. Heart rate monitoring,blood pressure monitoring,blood oxygen monitoring2. Step,distance,calorie3. Sleep monitoring (sleep duration, sleep quality)4. Multi-sport modes:running, walking, cycling, skipping rope, badminton,basketball,football,swimming, etc5. Social APP message reminder:QQ, WeChat, nailing, wang zhen, sina weibo, lnstagram, linkeln, Snapchat, bursts, Facebook, Skype, Twitter, WhatsApp, Line, KakaoTalk6. GPS track movement,call reminder,message reminder,stopwatch, mobile phone search, raise your hand to brighten the screen7. Sedentary reminder, alarm clock reminder, drinking water reminder, medication reminder, shake photo, female physiology reminder8. WeChat sports access, sports goal setting, fitness information sharing,weather,do not disturb mode