2 Speed AdjustableThe electric foot callus remover has 2 speeds: 1700x / min low speed for sensitive skin and 2000x / min at high speed for hard skin. A touch action for easy and easy foot care.3 replacement grinding head: neck remover for feet has 3 different quartz sand grinding heads, coarse grinding head can remove stubborn horny dead skin, medium grinding head can remove rough dead skin, fine grinding head for daily care. You can choose the suitable grinding head according to the skin to take care of your feet to restore sensitive and smooth skin.Rechargeable electric foot callus remover: the electric foot file with high-quality 1200 mAh large capacity lithium battery can work for about 120 minutes. Through the display you can see how much rest of the battery and when to charge. Including USB charging cable, the dead skin remover for feet can be easily charged with laptop, mesh strap and base.IPX7 waterproof: The electric callus remover has a waterproof IPX7 design, the whole body can be rinsed under running water. It follows that you can enjoy pedicure foot care in your bathroom. And it is suitable for wet and dry use.LED display: The built-in 300 wide angle LED indicator makes it easier to display the thick cocoons of the feet more clearly, which is suitable for the elderly in low light environments or with poor vision. Built-in powerful motor, strong and powerful for hard skin remover foot cocoons.Battery capacity: 1200mAhForce: 5 WVoltage: 5V-1a (USB)Capacity: 3 WFee time: 2-3 hours (not longer than 12 hours)Use time: approx. 120 minutesBox contents:1 x electric foot file3 x replacement heads1 x cleaning brush1 x charging cable1 x user manual (English language not guaranteed)