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Functions: * 0.96 inch TFT screen* Chip: NRF52832* APP name: WearHeart* Build-in 120mAh battery, Standby for 5-7 days, actually use 3-5 days* IP67 waterproof and dustproof ( you can wear it to rain, wash hands,climbing and other sports, but don't put it into hot water)  * Blood pressure and heart rate monitor* Multiple sport mode (running,swimming,riding, climing,basketball,football,walking,batminton)* Support iOS 8.0 version above and Android 4.4 version above* Reminder :Call reminders, SMS reminder, qq reminder, micro reminder, Skype, facebook, whatsApp reminder.* More function: Time / clock display, step, calories, distance, sleeping, camera, switch on/off display,Sleep monitoring (sleep time, sleep quality, stay up late),Find the phone and find the bracelet,Alarm clock / medication / meeting / sedentary / drink reminder,Remote control camera (shake shake to take pictures). Note:Wearable devices monitors human activities through electronic sensors,and they are at the consumer electuonics level.It's normal for certain deviation.The user should treat data objectively. Please do not compared to hospital equipment about reading,it is NOT a medical device !Before using, scan the QR code on the manual to download the app and connect it to the watch with APP.