M3C OLED Smart Wristband Fitness Tracker Black

Lets you keep track of heart rate for real-time monitoring of your health, Waterproof build ensures any-weather wearability, Incorporated pedometer function lets you count number of steps walked and effective calories burnt, Serves as an alarm clock so that you can always keep up with your active lifestyle, High-capacity polymer battery grants extended uptime for more wearing and less charging cycles in between