this 2ND GENERATION CALLUS SHAVER is the most powerful electric foot file for you, we have upgraded its motor, its real output speed is from 500 rmp to 1200 rpm, become faster, stronger and more efficient. MULTI-SPEED ADJUSTABLE, you can easily set different levels speeds by speed controller, better than other brands (they only provide two levels speeds). 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. Not battery operated-- you just need to plug in and can use it at once, more convenient. Replaceable sandpaper pad-- one person one disc, you can easily paste on the machine and remove it, more safe and healthy, perfect for nail salon family use. Stylish appearance-- aluminum alloy shell and nice polished, just like a small flashlight, easy to carry when you are in travel or vacation. PACKAGE LIST: 1 x Black electric callus remover (Upgraded Version) 1 x Box replacement sandpaper discs (60pcs) 1 X User manual 1 x US plug with speed controller Please note: this electric callus remover machine is not waterproof. Specification: Rated voltage: DC 24 V, Rated current: 1.5 A Real output speed range: 0-1200 rpm Electronic foot file size: 4.56x1.69 inch Electronic foot file weight: 5.99 oz. 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.