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, colored pencils, and charcoal pencils. 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 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, engineers, and professionals for drawing, writing, and coloring tasks. Rechargeable Design: Portable electric sharpener provides up to 300 uses on a single charge, which takes approximately 1 hour. Rechargeable via USB or AC adapter. Maintains charge for extended periods. Large Capacity Waste Container: Equipped with a spacious shavings compartment that reduces the frequency of cleaning. Easy-to-open lid allows for quick disposal of pencil shavings. Non-skid foot pads ensure stability during operation.