- Heart Rate Smart Fitness Band adopts advanced algorithm with precise calculation to track steps, distance, activity time.
 - It also can automatically monitors your sleep time and sleep quality, syncs the sleep data to the App.
 - With 0.86 inch OLED screen, time, steps, calories burned, caller ID, SMS can be displayed clearly.
 - USB charging directly without any cable, can work 3-5 days After fully charged.
 
