Heavy Duty Pencil Sharpener: Featuring a powerful motor and durable helical blade, this large pencil sharpener can sharpen over 5,000 times. Fits all types of 6-12mm pencils, colored pencils, and charcoal pencils. Sharpens quickly and uniformly in 3-5 seconds. Auto Stop: 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 settings—blunt, medium, and sharp. Operates quietly and efficiently to meet various needs. Ideal for artists, students, teachers, professors, engineers, and architects for drawing, writing, and coloring tasks. Rechargeable Design: The portable sharpener provides up to 300 uses on a single one-hour charge. Rechargeable via USB or with an AC adapter. Holds charge for extended periods. Large Capacity Design: Equipped with a high-capacity shavings container that reduces the frequency of cleaning. The cover opens easily for quick disposal of pencil shavings. Non-skid foot pads on the base ensure stability during operation.