Fast Sharpen: With a more powerful motor, this electric pencil sharpener sharpens quickly in 5-10 seconds and automatically stops working at the perfect point to protect pencil cores and intelligently handle broken pencil cores. It can sharpen almost all 8mm pencils, such as #2 pencils, colored pencils, charcoal and more..Auto Stop & Save Pencils: The colored pencil sharpener works automatically when inserting the pencil into the shaving entrance. Automatically stops working when finished or the lid is opened without over-sharpening, saving pencil lead. The 8mm-diameter shaving inlet keeps children's fingers out of harm's way..Electric Pencil Sharpener with Cord: This plug-in electric pencil sharpener can be powered by 4 AA batteries (Batteries NOT Included) or a USB cable. It is easy to carry and can be used anywhere. (Power Supply: input 100-240V, output 6.0V/1500mA or 4 AA alkaline batteries).Durable Pencil Sharpener: A mechanical pencil sharpener with a heavy-duty durable spiral blade that will sharpen your pencils over 3000 times. It's faster and more durable than ordinary electric pencil sharpeners..Easy to Clean: The blade of this classroom pencil sharpener is detachable, making it easy to clean up the shavings quickly. Open the cover of the reservoir to pour out the pencil shavings when finished, not adding too much trouble. Please contact JARLINK support if there are any problems during the use.