USB-powered 1200mAh battery, compatible with USB charging adapters, power supplies, laptops, and more. Easy to use both indoors and outdoors! The LED screen shows the remaining power and prompts you to charge. Two speeds The electric foot file has 2 speed settings that can be adjusted according to your needs. Speed 1: 1700 rpm / Speed 2: 2000 rpm. Two roller heads Comes with 2 different styles of roller heads: 1 fine roller for daily foot care; 1 regular roller for removing dead skin and 1 coarse roller for removing annoying calluses. Made of exfoliating particles, this roller removes all calluses quickly and easily, giving you incredibly soft feet in no time. Waterproof and easy to clean It allows the head to be kept under water. The pedicure roller is detachable with a button, making it easy to clean and replace. Note: To ensure the lifespan of the pedicure file, do not immerse it in water frequently. Use anywhere Lightweight and portable. You don't need to go to the pedicure salon, the electric shaver easily removes thick skin, dead skin, cracks, scabs, dry skin, calluses and other foot problems, giving you a better foot care experience. Specification Material: ABS + PP Size: 15 cm Voltage: 5 V 1 A Battery type: Built-in 1200 mAh lithium battery This product includes: 1 leg grinder 1 protective cover 2 natural quartz grinding stones 1 manual 1 USB charging cable 1 cleaning brush