Amazon.com : Callus Remover for Feet, Electric Foot File Rechargeable USB Rechargeable Waterproof Foot Scrubber Callus Remover Amazon.com : Electric Foot Callus Remover, Rechargeable Electronic Foot Amazon.com : Electric Foot Callus Remover, Rechargeable Electronic Foot Amazon.com : Electric Foot Callus Remover Long Service Time Amazon.com : Electric Foot Callus Remover Long Service Time. Description: Power: 3W. Color: As shown in the pictures. Gender: Unisex. Size: 15. 5 cm 6. 10 inch. Features: IPX5 waterproof design; keep water away from the charging port. Strong power with 11,000 RPM to effectively remove callus and dead skin. Versatile; works well on any part of your feet. Easy and comfortable to use in the comfort of your own home. Package Includes: 1 x Foot Scrubber. 1 x USB Charging Cable. 1 x User Manual.