Equipped with two types of grinding heads : coarse and fine grinding heads can be replaced, which can easily remove thick calluses from feet. It can be used after bathing. Softened ones are easier to handle and safer, and don't cause as much damage as other manual devices. Second gear adjustment : high and low speed, first gear low speed 1700 rpm, second gear high speed 2000 rpm, adapt to different cuticles. Ergonomic Design : Our electric foot grinder has no harmful blades and the roller surface will not hurt your skin. The handle is comfortable to hold, and the grinding head can be removed and washed separately, which is clean and hygienic. Type-C universal charging interface : support while charging and use, universal Type-C interface, just use the included adapter to charge for 3-4 hours, and it can be used continuously for more than 30 minutes. Perfect Gift : Our electric foot grinder, which brings you exquisite and beautiful feet, saves the time and cost of going out to the foot spa, is an exclusive gift for you and your family or friends.