Powerful Callus RemovalThis foot file easily removes thick and rough calluses and cracked skin on your feet. The foot scrub set includes an electric callus remover with a charging cable, three replacement roller heads (including one pre-installed roller and two extra rollers). Safe & GentleThe foot sander has three rollers with different roughness (fine grinding head, coarse grinding head, and cyclone head) and two working modes - low speed 4500x/min and high speed 6500x/min. Removes dead skin cells on your feet and gently removes calluses without damaging healthy skin. Quickly RechargeableThe electric foot file has a long battery life and is plug and play. The electric foot file is equipped with a large capacity 600mAh lithium battery. The charging time is only 0.5 hours, and the machine can work for about 120 minutes. When charging, the red light turns off and the battery is fully charged. WashableCallus remover, easy to clean. The grinding head is removable and washable. The body can be washed, but should not be immersed in water to avoid damage. Small and PortableThe lightweight and compact foot sander is ideal for travel or a night out.