Heavy Duty Pencil Sharpener: Featuring a powerful motor and durable helical blade, this large pencil sharpener can sharpen up to 5000 times. Compatible with various 6-12mm pencils, including standard pencils, colored pencils, and charcoal pencils. It sharpens quickly and evenly in 3-5 seconds. Auto Stop Function: Automatically starts when a pencil is inserted into the socket. Automatically stops when sharpening is complete or when the lid is opened, enhancing child safety and preventing over-sharpening. Three Adjustable Sharpness Settings: Offers three precision levels—blunt, medium, and sharp—to suit different needs. Operates quietly and efficiently, ideal for artists, students, teachers, professionals, and more, making drawing, writing, and coloring easier. Rechargeable Design: The portable electric sharpener provides up to 300 uses on a single charge, which takes approximately 1 hour. Can be recharged via USB or with an AC adapter. Holds charge for extended periods. Large Capacity Waste Container: The built-in shavings compartment has a high capacity, reducing the frequency of emptying. The cover opens easily for quick disposal of pencil shavings. Non-slip feet ensure stability during operation.