LIFE LIFE more than 800 times cutting pencil diameter suitable for using: 6-8mm diameter pencilsBLADE HOLDERAdditionally provide a spare blade holder, rotate the safety top cover to replace, guarantee the durability of the pencil sharpener EFFICIENT Suitable for 2 AA batteries (not included), press pencil to start work and automatically sharpen, good for crayons, pencils, only need 3-5 seconds to finish work. Do a lot of sharpening work in a short timeMULTIFUNCTION Manual and electric working state, which can be switched freely only by adjusting the conversion knob, make sure the sharpener still work when the batteries can't provide powerSAFETYWhen the transparent side cover opens, the sharpener will stop working and avoid hurting children's fingers