Description Feature: 1. Portable Foot Grinder: The electric foot callus remover has built in 1300mAh lithium battery with protection board, ensuring safe and easy cleaning. 2. Cordless Use: One touch start, the cordless portable foot grinder offers adjustable speed, and charging indicator allow for convenient and customizable foot care. 3. Versatile Charging: The electronic foot file pedicure kits is equipped with a universal micro USB charging port, compatible with most phone chargers for easy charging. 4. Interchangeable Grinding Heads: The electric foot scrubber kit includes two removable grinding heads for personalized foot care based on individual needs. 5. Convenient: Enjoy cordless convenience and smooth feet with the electronic foot file pedicure kits without spatial limitations, suitable for most use. Specification: Item Type: Cordless Portable Foot Grinder Size: Approx. 45x150mm / 1.77x5.91in Battery: 1300mAh Lithium Battery (Built in) Charging Voltage: TYPE-C 5V Charging Current: 1A Rated Voltage: 3.7V Rated Power: 2.5 w High Speed: 550010% rpm Low Speed: 350010% rpm. Package List: 1 x Foot Grinder 1 x Replacement Head 1 x USB Cable 1 x User Manual