❤[Powered USB] 1200mAh battery, it is compatible with USB charging adapter, power source, laptop, etc. Easy to use indoors and outdoors! The LED display will show the balance of power and urge you to charge.❤[2 speed control] electric foot rasp with 2 speed settings can be adjusted according to your requirements. Speed 1: 1900rpm/Speed 2: 2200rpm❤[Three Rollers head] comes with 3 different style rollers heads: 1 thin rollers for daily foot care; 1 common rollers for stripping dead skin; and 1 coarse rollers for annoying Kapalan. Rollers consist of exfoliating micro details to remove all the caps easily and quickly for a very soft foot effect in no time❤[Water case and easy to clean] This allows you to put your head under water. Foot pedicure rollers can be disassembled or assembled with only one button, making them easy to clean and replace. Note: to ensure the duration of the foot pedicure soak, please do not dampen it regularly in the water❤[Use anywhere] one size (15.3*6cm) is lightweight and portable. No need to drive to pedicure salon, electric soak easily removes thick skin, dead skin, cracks, hard skin, dry skin, Kapalan and other foot problems, gives you a better foot care experience.❤[Durable & easy to carry] this foot callus remover body is made of ABS material, which is sturdy and durable. It is not large in size, very lightweight, and easy to carry while you travel or on a business trip, without delay your daily exfoliating care. Besides personal use, it is also very suitable for salon and massage shop to serve customers.