【Callus remover for feet】Our electric Callus Remover with 2x Strong Motor to buff away hard, dead skin in High Speed, Reveal baby-soft skin in minutes. 【2 Speed 3 Roller Head】 Powerful and Fast Two-speed Replacement. Three types of rollers have varying degrees of roughness applicable to different dead skins and calluses. 【Rechargeable Electric Foot Callus Remover】The electric foot file with high quality 1500mAh large capacity lithium battery can work for about 120 minutes. Only charge about 2-3 hours. 【Safety Technology】 If your child or pet click the power button by accident. you have to long-press the button 2S to turn it off.IPX7 Waterproof for wet and dry use.