The size is ideal and it is gripped with a handle, making grinding feet more labor‑saving. Black foot grinding technology, blue light cleaning and repairing, better care for your feet. High power, strong enough, built‑in powerful motor 7w high power, long working time. The blue light is always on, the 1st gear is low‑speed, and the dead skin is gently removed. The blue light flashes, the 2nd gear is high‑speed gear, powerfully eliminates calluses. Item Type: Electric Foot File Gear Position: 2 gears Voltage: 3.7V Power: 7W Battery Type: Lithium Battery Battery Capacity: 2000mAh Instructions: 1. Soak your feet in warm water for about 10 minutes and then wipe dry 2. Remove the upper cover of the grinding head 3. Select the appropriate grinding head to be stuck on the buckle according to your needs 4. Use the side of the grinding head to fully contact the dead skin position (select low and high gears according to needs) Function and Exfoliating Steps: In the shutdown state, long press the power button for 2 seconds, the machine is turned on, the blue indicator light is always on, and the grinding head runs in a low gear. Short press the power button, the indicator light flashes blue, the grinding head enters the high gear mode, under normal power on, short press the power button, the grinding head switches between high and low gear modes.1 x Host 1 x Cover 2 x Grinding Head 2 x Sponge 1 x USB Data Cable 1 x Packing Box