STYLISH APPEARANCE, aluminum alloy shell and nice polished, just like a small flashlight, portable and lightweight. REPLACEABLE SANDPAPER DISCS, self-adhesive ability, easy to paste and remove, one person one disc, more healthy, perfect for nail salon family use. NOT BATTERY OPERATED, no need worry about low battery again, just plug into a socket and use it directly. MULTI-SPEED ADJUSTABLE, you can easily set different levels speeds by speed controller, better than other brands (they only provide two levels speeds). Please note that this electric foot grinder is only suitable for normal foot dead skin, NOT FOR thick dead skin, calluses!. EASY TO USE, DOES NOT HURT FOOT, This is IBN upgraded electric foot callus remover, you can freely adjust the speed from 0-1200 rpm. During operation, we need to apply proper pressure to the machine, not too much, this electric foot grinder will gently remove dead skin and does not hurt your foot.