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 pencils sized 6-12mm, including standard pencils, colored pencils, and charcoal pencils. Sharpens quickly and uniformly 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. Ideal for children's use. Three Adjustable Sharpness Settings: Offers three precision settings—blunt, medium, and sharp—to meet different needs. Operates quietly and efficiently, making it suitable for artists, students, teachers, engineers, architects, and professionals who require precision in drawing, writing, or coloring. Rechargeable Design: This portable electric pencil sharpener provides up to 300 uses on a single charge after one hour of charging. Can be recharged via USB or with an AC adapter. Maintains long-lasting battery performance. Large Capacity Waste Container: Equipped with a spacious shavings compartment that reduces the frequency of cleaning. The cover opens easily for quick disposal of pencil shavings. Non-slip foot pads on the base ensure stability during operation.