NO BATTERY OPERATED FOOT SANDER: This electric foot sander doesn't use batteries, so you don't have to worry about low battery. It's easy to use, just plug it into an outlet, turn on the switch, adjust the speed, and you can use electric feet callus remover right away. | ADJUSTABLE SPEED: It doesn't have a preset fixed speed, so that you can freely adjust the speed of this electric foot callus remover, fast or slow, it's up to you. | SAFE AND EASY TO USE: The electric callus remover for feet is slow (0-500rpm) but it has a lot of torque, it won't stop easily unless you apply a lot of pressure. It slowly rotates in 360 degrees to remove dead skin from your feet without harming healthy skin, easy to use and maneuver and will not harm your feet easily. | SMOOTH AND QUIET OPERATION: Our electric foot file is made with an excellent motor that is quiet when using it. The body of the foot grinder is a smooth aluminum alloy shell that looks great, compact and light weight, comfortable to hold. | APPLICABLE SCOPE: This This electric foot sander is only suitable for daily dead hard dry skin removal, not for serious thick calluses corn | REPLACEABLE SANDPAPER DISCS: Comes with 60 self-adhesive sandpaper disks that are replaceable, easy to paste and remove, 1 person 1 sandpaper, clean and convenient.