This Rapesco Automatic/Electric Pencil Sharpener features a dual hole design for standard (6-8 mm) and jumbo (9-12 mm) pencils, accommodating round, triangular, and hexagonal pencils. It can be powered via USB cable (included) or 4 x AA batteries (not included) for portability. The sharpener includes an auto-off safety feature when the shavings cover is removed and a sliding safety cover over the larger sharpening hole. It is lightweight and compact with durable carbon steel blades, a large-capacity chip box, anti-slip foam pads for stability, and removable sharpening units for easy cleaning. It comes supplied with 2 large and 2 regular replaceable sharpening units. Suitable for left and right-handed users in classrooms, offices, art studios, or homes.