Exclusive tool-free replaceable cutter system for continued use. XHC²™ dual cutter technology for 50% faster sharpening and 10x longer life. Colored pencil compatible for peace of mind. QuietSharp™ Xtreme Duty fan cooled motor for quiet stall free operation. Sharp & Glow™ auto shut off prevents over sharpening while dramatic bezel glow provides visual feedback. TipSaver™ technology prevents oversharpening, extending pencil life. Sharpener Type: Desktop; Power Type: Electric; Cutter Material(s): Hardened Steel.