Basically a regular 1 inch pencil sharpener (the ones you get out of a gumball machine) housed inside a slick looking black case with batteries.It works worse than the old five and dime cheap sharpeners because this one is like feeding a carrot through a blender.Not worth $15, not work $5, not worth $1.Might have to go back to the tried and true hand crack Bostitch ones.