Sharpens pencils in 3 seconds! Sharpener glows when pencils are sharp, plus features SharpStop technology to prevent over-sharpening. 6-size selector dial is easy to change with just one hand, and even has a triangular setting. QuietSharp motor offers high performance with quiet operation, plus thermal overload protection for increased motor life. Features high capacity shavings tray, plus a safety switch that won't allow the motor to run if the tray is removed. QuietSharp Classroom sharpener offers XHC cutter technology for 10 times longer life. 7-year limited manufacturer's warranty.