Chef"s Choice knife sharpener produces razor sharp edges with advanced Hybird technology, combining 2 stages of sharpening, electric, and manual. Uses 100% diamond abrasives in both stage 1 for electric sharpening and stage 2, for manual honing and resharpening. New, efficient, criss cross sharpening technology for extremely sharp edge with lots of bite. For use with straight edge and serrated knives, kitchen, sport, and pocket knives. 1 year limited warranty. White. Assembled in U.S.A.