Description EC270: Diamond Hone Hybrid Knife Sharpener Chef'sChoice by EdgeCraft The new, efficient 3-Stage Chef'sChoice® Diamond Hone® Hybrid® Model 270 is the most advanced Hybrid® yet, combining the acclaimed CrissCross™ sharpening technology and electric and manual sharpening stages that provide superior edge geometry and razor sharp edges on both straight edge and serrated knives including household and kitchen knives , sports knives and pocket knives . The Chef'sChoice CrissCross™ sharpening technology is praised by home cooks and professional chefs for its extremely sharp edge with lots of "bite." The diamond abrasive wheels sharpen simultaneously "into" and "out-of" the edge for a superior burr-free edge. Featuring elegant and durable brushed stainless steel knife guides, Stages 1 and 2 are electric using 100% diamond abrasives for fast and easy edge shaping and sharpening. Stage 3 uses ultra fine diamond abrasive wheels for a polished, razor-sharp, arch-shaped edge that is stronger and more durable. Stage 3 also sharpens serrated edges. One year limited warranty. Engineered and assembled in the USA. Designed for American electrical outlets. Voltage: 120V/60Hz.