MyLifeUNIT Electric Automatic Pencil Sharpener School Office Stationery Supplies (Red) This light duty, portable pencil sharpener is ideal for home, classroom or office use. Since it's AAA battery operated, there are no cords to tangle or clutter up your desk. Conveniently operates automatically when the pencil is inserted. Integrated safety switch prevents operation when tray is removed. For use with standard-sized pencils.