PORTABLE ELECTRIC PENCIL SHARPENER - Battery, Plug-in, or USB power. Includes power adapter! Durable Small Lightweight Powerful Safe. Great for home office, arts & craft, teachers, kids, and school. LIGHT ON YOUR BACK. The pencil sharpener is portable, light weight(&lt; 5 oz), and small. It can easily fit in backpack or school bag. YOU GET MORE with three power options. Powered either with an INCLUDED wall outlet, a computer with powered USB port (not included) or 4 AA batteries (not included). You choose on the go! Quieter than other electric pencil sharpeners and great for classrooms. SAFE FOR YOUR FAMILY STUDENTS. The blade is internal and very difficult to accidental cause harm making it safe for kids and classrooms. SAVES YOU TIME. It is easy to clean and sharpen. Pop off cover allows quick and easy empty and clean. There is a spare blade included and attached to the inside of the battery compartment for easy storage. There is also an included mini screwdriver to change the blade. EASY TO OPERATE. There are rubber feet on the bottom to resist slipping when the motor is activated. Other pencil sharpeners don't always have the rubber feet causing the sharpener to spin and require two hands.