Scholl velvet smooth electronic nail care system scholl39s velvet smooth electronic nail care system comes with an electric nail file with 3 different heads for filing buffing and polishing for both toe and fingernails it works with 1 aa battery included for the perfect finish there is the rich cuticle and nail oil with a nourishing 7 oil complex step 1 put the file head on the nail pen switch it on by choosing your desired speed from 2 speed options and file your nails in your des