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*High-quality screen:1.22inch Super-definition display effect brings you different visual experiences and shows you more data. *IP67 waterproof technology: The surface of this smart watch is very waterproof, no need to remove it when splashing rain, sweat, DIVING, SWIMMING, washing your hands or washing others everyday life,perfect for sports& outdoor lover. *Versatility:Health ECG measurement, sleep monitoring, time display, step counting, calories, distance, heart rate, sleep time, alarm clock. *High quality battery capacity:200mAH super Battery capacity, standby 15 days, it can use 5-7 days after full charging. *App compatibility:supports most smart phones with Bluetooth 4.0 & above, iOS 8.0 & above, Android 4.4 & above.IOS system in the store, Android phone in the application treasure search Wearheart download and install.If you encounter any problems in using the product, please contact us. Product specifications: Screen display: 1.22 inches IPS: 240x204 Battery capacity: 200 mAh Standby time: 15 days or so Working time: 5-7 days Motor: built-in, vibration reminder Waterproof rating: IP67 Sensor: gravity sensor System requirements: Android 4.4 and above, IOS 8.0 and above, support for Bluetooth 4.0 Bluetooth version: Bluetooth 4.2 Memory 64K (Flash 512K) + 64M Function: standard motion function (step, distance, calories), call notification, message reminder, multi-language push, ECG measurement, sleep monitoring (sleep time, sleep quality) time display, step counting, calories, distance, heart rate, sleep time , the switch shows the alarm clock APP/APK download method: 1. Android and IOS app sync: Wearheart Reminder: (IOS system in the store, Android phone in the application treasure search Wearheart download and install) 2. QR code scan download and install Wearheart packing list: 1X smart watch 1XUSB charging cable 1X instruction manual