This compact 3-stage electric knife sharpener for kitchen knives comes equipped with 100-percent diamond abrasives that sharpen edges faster and easier. Ideal for all 15- and 20-degree knives, including both straight-edge and serrated knives, this sharpener improves cutting performance by creating 2 distinct facets set at different angles to form a longer lasting, arch-shaped edge. The first stage sharpens 15-degree knives, while the second stage sharpens 20-degree knives. In the final stage, patented stropping disks apply an unparalleled polished finish to both 15-degree and 20-degree knives. The Chef’sChoice 1520 quickly and easily sharpens virtually all quality cutlery, including American, European, and Asian-style household knives, fine-edge or serrated blades, Santoku and traditional Japanese-style single-bevel edges, as well as sports knives and pocket knives. Advanced patented technology restores and recreates 20-degree edges for traditional European- and American-style knives and 15-degree edges for Asian-style knives and contemporary European/American-style knives. First-time sharpening takes approximately 1 minute. Resharpening takes approximately 10 seconds. Precision angle guides ensure accurate sharpening throughout the entire blade length and eliminate any guesswork.