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 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, engineers, and architects for drawing, writing, and coloring tasks. Rechargeable Design: Portable and powered by a long-lasting battery, this sharpener can be used approximately 300 times on a single one-hour charge. Rechargeable via USB or with an AC adapter. Maintains charge for extended periods. Large Capacity Shavings Container: Designed with a spacious shavings compartment to minimize frequent cleanings. The cover opens easily for quick disposal of pencil shavings. Non-skid foot pads on the base ensure stability during use.