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

Features: 
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)