NOT BATTERY OPERATED, no need worry about low battery again, just plug into a socket and use it directly. REPLACEABLE SANDPAPER DISCS, self-adhesive ability, easy to paste and remove, one person one disc, more healthy, perfect for nail salon family use. STYLISH APPEARANCE, aluminum alloy shell and nice polished, just like a small flashlight, portable and lightweight. MAIN FEATURES: This Is 2nd Generation Electric Callus Remover Machine: It becomes faster and stronger, 360 degree rotating, more easily remove foot heel cracked, dry, dead skin, calluses. Multi-speed adjustable- you can easily set all kinds of speeds, fast or slow is up to you, enjoy pedicure spa fun. HOW TO USE? Step 1, we need to soak our foot for 20-30 minutes with warm water, to soften feet dead skin. (please do not skip this step) Step 2, Tear off the protective film of sandpaper disk, paste it on the machine well. Step 3, Connect the supply cord and plug into the outlet. Step 4, Turn on switch and adjust suitable speed you need. Step 5, In the operation, you can apply appropriate pressure, easily remove dead skin, hard skin, cracked skin etc. Step 6, After using, remove sandpaper disk and clean machine with dry cloth. This machine is not waterproof, please be attention.Package:1 x Machine1 x Power adapter60 x replaceable sandpaper discs1 x Instruction for use