NOT BATTERY POWERED: I.B.N Electric foot callus remover doesn't use batteries, no need to worry about low battery, when you want to use it, plug it directly into the outlet and you can use it right away. | WITH GOVERNOR-SPEED ADJUSTABLE: The speed of electric foot callus remover is adjustable, you can adjust the right speed to remove the dead skin on your feet, won't hurt the healthy skin. (When using the machine, please don't apply too much pressure, otherwise it will cause the machine not to rotate and the machine will be damaged). | 60 REPLACEMENT SANDPAPER DISCS: With 60 replaceable self-adhesive sandpaper discs that stick to the electric callus remover very firmly and are also easy to remove, 1 sandpaper for 1 person, perfect for family use. | GENTLE REMOVAL OF DEAD SKIN: The speed range of electric callus remover is not very fast (0-500rpm), but it has a high torque (strong force), the right speed is more helpful for us to control the machine to remove the dead skin, and it will not hurt the healthy skin. | EASY TO USE: Durable aluminum alloy body, compact size, easy to hold and use, this electric callus remover is suitable for women men to remove dead skin from their feet.