Powerful, Safe & 2 Speeds Adjustable?Electric Foot Callus Remover have 2 speeds:1700x/min when at low speed and 2000x/min when at high speed.If the pressure is too strong,it will automatically stop working and avoid damage to the healthy skin. Gentle on your feet and easy to use, the soft skin callus remover helps you to achieve soft, silky feet. This callus remover is designed to remove hard skin for smooth results after just one use. It buffs away hard skin in minutes, leaving you with smooth feet you'll want to show off. IPX7 Waterproof?The electric foot file has waterproof design, whole body can be rinsed under running water. You can washing it and keep clean after using. It is suitable for wet and dry use, Electric foot scraper would effectively solves the problem of bacteria growing on the gaps and protects your feet health. 3 Replace Grinding Head?Callous removers for feet has 3 different quartz sand grinding heads,rough grinding head can remover stubborn horny dead skin , medium grinding head can remover rough dead skin, fine grinding head use for daily care. You can choose suitable grinding head according to the skin to care,make your feet restore the delicate and smooth skin. All materials are eco-friendly and meet 100 percent natural standards, paraben-free and cruelty-free.This is the best gift for someone you love,take good care of her/his skin.