Using our practical electric callus remover, you can broadly and gently remove calluses or small heel cracks without damaging the healthy skin layer underneath. This electric healing file is waterproof and can be washed with running water or immersed in water. Wet and dry.5 levels of power indicator, charging time: 4-5 hours (including USB charging cable; running time: 1 hour, 2 levels. 1700x\/min and 2000x\/min are optional. According to your needs, you can choose between 2 replacement rollers to remove hard skins of different hardness. Practical device for cosmetic foot care 3 roller heads. 1 x Coarse roller head for hard and hard callus 1 x Ordinary Dead Leather Roller Head 1 thin roller head for daily foot care. 1. Soak your feet in warm water for 10 minutes to soften the dead skin of your feet. 2. Use our products to remove dead skin. 3. Clean the feet and apply some cream to moisturize the feet. Enjoy the feeling of smooth and soft skin.