Tontec 3 in 1 Pencil Sharpener Battery USB Operated AC Adapter Powered Electric Sharpener With 3 Sharpness Setting Blunt Medium Sharp For Kids School, Office, Art & Craft Use 3 in 1 Charging Mode:More choice to charge sharpener with USB,AC adapter or 4 AA batteries(not included). 3 in 1 Sharpness Setting:More flexible to get different sharpness for different jobs. Even Sharpening Pencil Point:Hassle free to get a even point instead of a lop-sided one. Safety Feature Designed:Stop working without dust case fixed exactly on sharpener. Fast & Portable:Compactly and portably designed.Much quicker to get a pencil point than manual sharpeners.