This automatic dual powered (USB or battery) pencil sharpener provides quick and precise pencil sharpening. With two separate holes to fit standard to jumbo size pencils; this sharpener features a safety cover over the larger hole making it suitable for all to use. Blade units are easily changeable and the PS-12USB comes supplied with two units preloaded and an extra set for when replacement is required. Powered by either USB cable (supplied) or 4 x AA batteries; this fast and easy to use pencil sharpener is an essential addition to any desktop.