X-Acto® Schoolpro Electric Pencil Sharpener Features A Powerful Heavy-Duty Motor With Auto-Reset To Prevent Motor Overheating. Patented Flyaway Cutter System That Prevents Over-Sharpening. X-Acto Pencil Sharpener Has An Extra-Long Blade Life For Heavy Usage In Classroom Settings. Manufacturer's 10-Year Limited Warranty.