Product Description Size: 4.5 * 8.17cm color: White Material: ABS Package content: 1 * foot grinding device 3 * grinding head 1 * dust cover 1 * cleaning brush 1 * head changer 1 * USB data cable 1. Electric callus remover :The grinding surface of the Electric Callus Remover adopts a curved surface design, whereby the skin contact area can be increased and thoroughly removes dry skin, calluses or calluses on the soles of the feet and heels in seconds more precisely, painlessly and gently, without the risk of injury. Press for 2 seconds to turn on. 2.3 grinding heads : We have 1 fine roller head, 2 coarse roller head in this set. The roller of the callus remover can be easily replaced and cleaned. A total of 6 modes will meet all your callus removal needs and help you. 3.Two-speed speed regulation Press the switch to display the green light I is the first low-speed gear, choose II as the second-speed high-speed gear, and select the speed according to your own needs. 4.USB battery & dust-free design: Battery with 1000mAh capacity for long operating times. It can be connected to a PC, adapter, power bank, etc. for charging. Our callus remover is motorized with a built-in vacuum cleaner and can absorb most dust when you rub your feet. Don't worry that the dead skin will be scattered and difficult to clean 5. Waterproof & Ergonomic:The callus removal can adapt to all kinds of humid environment, you can enjoy foot care in the bathroom, do not submerge it in water. A perfect gift for your family and friends. Special ergonomic, non-slip design, you don't have to worry about falling.