The Presto electric knife sharpener provides an easy, automatic way to sharpen most non-serrated kitchen and sport knives to a razor sharp edge. With a special two stage system, it precision grinds a perfect sharpening angle, then fine hones and polishes the edge for professional results at home, anytime. 120 volts AC. Features: Nonslip Base, Electric Sharpening, Preset Angles for Correct Sharpening, Sharpening Levels: Coarse and Fine