1)Replaced sharpening head. 2)It is used for Ceramic knife specially. 3)Diamond,ABS, Stainless steel, 1,Applicable to kitchen knives of ... knives.2,For ceramic knives, best results and fast.3,Diamond and ceramic material guarantee high efficiency and fine sharpening result ... 100-240 VAC, 50HZ—60HZ.It has passed CE . Ceramic Knife Electric Diamond Knife Sharpener