1.[Auto function] Automatic pencil sharpener set for size 2 pencils (6-8mm) will automatically stop when the pencil is sharpened to a durable point, 3-5 seconds quick sharpening can prevent your pencils from being eaten 2.[Heavy Duty Steel Blade] The 360?? fast pencil sharpener and powerful heavy duty steel blade can sharpen pencils more than 3,000 times, in addition, there are 3 different sharpness options (sharp/medium/dull) to choose from. 3. [Storage Box] The pencil sharpener comes with a storage box and a hanging storage box, suitable for small objects on the table, such as paper clips, clips, staples, etc., so that your desk is not dirty and clean 4.[Multiple Power Supply] Powered by 4A battery (not included) or AC adapter. Flexible and convenient, can be used anywhere, easy to carry. 5.Perfect for teachers, students, engineers, kids, artists and anyone who loves to draw!