Sport Waterproof Heart Rate Monitor Smart Bracelet M2 Wrist Band Smart Watch OLED Fitness Tracker Pedometer For IOS Andriod Phones (Black) WANKAI

Dear customer, we are sorry to inform you that some customers have received the smart bracelet of the new model. If there is damage, please contact us for a refund. The new model does not require a separate charging cable and the product can be directly charged via USB. you can try wait 5min while youf plug in the charge Features:  0.42"" OLED display screen; Incoming messages, calls, and note prompt: iOS and Android, English and Chinese; Heart rate monitor: real time monitoring, monitor time period setting; Time display, pedometer, real time heart rate, distance shown; Standard sports functions: pedometer, distance counting, calorie consumption; Sleep tracking: sleeping time and quality; Time display, pedometer, distance shown on the screen; Turn-wrist to screen bright; locating and finding watch; Anti-lost reminder: When your phone is out of your monitoring range, it will remind you;   Specifications: System Required: Android 4.4 or above, iOS 8.0 or above, Bluetooth 4.0 Bluetooth Version: 4.2 waterproof: IP67 Grade Chip: ST17S25  Sensor: Gravity sensor, and Reflecting photoelectric heart rate sensor Display Screen: 0.42"" OLED Battery Capacity: 70mAh Standby Hours: 15 days Working Hours: 5 days Operating Way: Capacitive Touch Screen Warning Way: Built-in high sensitivity motor APP/APK Downloading Way: Android and iOS (English Name: Yoho Sports) You can search and find it in Apple APP Store or in Android App stores)