Feature: 1. 3 REPLACEMENT GRINDING HEAD: Electric callus remover has three types of grinding heads (coarse, fine, polishing) applicable to different dead skins and calluses. You can choose suitable grinding head according to the skin to care, so that keep your foot skin always healthy. 2. THREE ADJUSTABLE SPEEDS: Our electric foot callus remover includes 1600rpm low speed for gentle care, 1700rpm medium speed for rough dead skin, and 1800rpm high speed for removing thick calluses and dead skin. You can easily switch speeds for personalized and comfortable use. 3. EFFICIENT AND AUTOMATIC VACUUMING: This electric foot grinder has a powerful vacuum cleaning system. High speed centrifugal rotating adsorption allows for suction while grinding, adsorbing 99% of dandruff. Perfect for men and women looking for safe, professional removal of dead skin at home. 4. QUICK CHARGING: Electric foot file has built in 4000mAh rechargeable battery that supports 1.5 hours of quick charging and up to 60 minutes of continuous use. Powerful and long battery life ensures a more efficient and comfortable foot care experience. 5. COMPACT AND PORTABLE: Our electric feet callus remover is designed to be compact and lightweight, perfect for traveling and easy to use anywhere. It is a perfect gift choice for your loved ones to take care of their skin. Specification: Item Type: Electric Foot Callus Remover Material: ABS Size: Approx. 200 x 93mm / 7.9 x 3.7in Battery: Lithium Battery, 4000mAh (Shipped with Built in Battery) Gears: 3 Adjustable Gears Gross Weight: Approx. 422g / 14.9oz. Package List: 1 x Electric Foot Callus Remover1 x Instruction Manual 1 x USB Cable 3 x Replacement Grinding Heads 1 x Brush Note: Manual measurement, please allow some errors.