Powerful heavy-duty motor with Auto-Reset(TM) to prevent motor overheating Patented SmartStop(R) shuts off motor and lights up to prevent over-sharpening. Extra long blade life for heavy usage in classroom setting. SafeStart(TM) feature prevents the sharpener from operating unless the extra-large receptacle is in place. Multiple settings for a variety of pencil sizes. Manufacturer's 10-year limited warranty. X-ACTO Pencil Sharpeners part of a large selection of office supplies. X-ACTO(R) TeacherPro(R) Classroom Electric Pencil Sharpener, Blue is one of many Electric/Battery Operated Pencil Sharpeners available through Office Depot. Made by X-ACTO.