| Dear friends, Welcome to our store, wish you have a good shopping Features: 1.USB charging models, working time, 1-2 times a day, 2 minutes each time, can be used for 45-60 days Laboratory data . 2. Working mode: gear memory function, 2 minutes timer, 30 seconds pause, short press to turn on, short press to switch gears after turning on, in order of first, second, third, fourth, fifth, sixth, long press 3 seconds to turn off. 3. The light is on in the corresponding gear position when working, the red light is on when charging, and the light turns green when full. Warm tips: the brush head of the bristles in the production and transportation process has deformation phenomenon, is a normal | |