Knife sharpener with advanced three-stage Hybrid technology provides razor sharp edges. It combines electric and manual sharpening for straight and serrated knives, kitchen and household knives plus sporting and pocket knives. Stage 1 and 2 provides electric sharpening and manual honing, while stage 3 makes for a razor-sharp, arch-shaped edge that is stronger and more durable. With 100% diamond abrasives in all three stages, diamond abrasives are durable and hold their shape indefinitely. They sharpen any alloy, and the ultra-fine diamond abrasives in stage 3 ensure a super sharp polished edge. One-year warranty. Model# 250.