[Multifunctional electric foot grinder]: This electric foot grinder is very practical. Two speeds can quickly and safely remove dead skin and calluses, painless and practical. Make your feet grayer. [USB charging foot file]: Our pedicure file is battery-powered, built-in 500mAh large-capacity lithium battery, after 1.5 hours of fast charging, the battery life is about 50 minutes. Quickly and effectively remove calluses for you, and make your feet healthier. [Removable grinding head]: The grinding head can be removed and rinsed immediately after use, effectively solving the problem of residual calluses and ensuring cleanliness. This electric foot grinder has 3 interchangeable grinding heads; the delicious, fine and polished 3 grinding heads can easily remove thick deformations on the feet. [Integrated dust collection system]: Calluses can be picked up during grinding, and the high-quality body is conducive to efficient heat dissipation, without worrying about overheating.