Features:Ideal for chef knives， carving knives， bread knives， steak knives， paring knives， filet knives， cheese knives， choppers， cleavers， scissors， precision tools and more!Cordless and battery operatedRequires 4 AA batteries， not includedProfessional grade， high-speed rotating sapphire stone shapes and hones the bladeCompact design for easy storageSafe and easy to use