[Strong, safe, adjustable in 2 levels] The electric foot cocoon remover has 2 speeds: low speed 1700x/min, high speed 2000x/min. If the pressure is too high, it will automatically stop working to avoid damaging the soles of the feet. Healthy skin.[LED power display & long-lasting rechargeable] The high-quality 1200mah large-capacity lithium battery has overcharge protection and 5-level battery display functions. You can see the remaining power and when to charge. The USB charging time is 4-5 hours, and it can run continuously for about 120 minutes. Note: Please use the charging voltage: 5V/1A, so as not to affect the service life if the voltage is too high.WaterproofThe electric foot file adopts waterproof design, and the whole body can be washed with running water. It can be washed and kept clean after use. For both wet and dry use, the electric foot scraper effectively solves the problem of bacteria growing in the gap and protects the health of the feet.[Replacement of grinding heads] There are 3 different quartz sand grinding heads for the foot exfoliator. The coarse grinding head can remove stubborn dead skin, the middle grinding head can remove rough and dead skin, and the fine grinding head is used for daily care. You can choose a suitable grinding head for care according to the skin type, so that your feet can restore delicate and smooth skin.If you have any questions, please contact us in time.