Built with the classroom demands in mind, this Vertical Rechargeable Pencil Sharpener helps students sharpen their pencils quickly and safely. The pencil grab mechanism automatically adjusts to accommodate pencils from standard to jumbo sized, up to 11.5mm in diameter. The XHC cutter technology allows for 70-percent faster sharpening and 10-times longer life. Autostop technology prevents oversharpening to provide the perfect point every time. To ensure safety in the classroom, the tamper-proof MagnaSafe shutoff technology prevents operation when the shavings tray is removed. Easily charge the 2200mAh lithium-ion battery in four hours or less using the included USB-C cable. When in use, LED indicator lights on the sharpener signal the battery life remaining.