Premium Electric Mechanical Pencil Sharpener with Helical Blade by Merite - Heavy Duty - Battery / Electric Operated - Includes Cable & Adaptor POWERED THREE WAYS: Included is an AC Adapter and a USB cord for use with your computer or you can use 4 AA Batteries (not included). Unlike bulkier sharpeners this is a really compact and quiet but just as powerful in getting the job done Quick, fast and fits great on your desk - Take it anywhere because of its unique size Size 4.73 x 2.95 x 2.05 inches Weight: 8.8 ounces. A Unique Multi-Diameter dial that adjusts to 3 different pencil points - Blunt to Sharp