1)Replaced sharpening head. 2)It is used for Ceramic knife specially. 3)Diamond,ABS, Stainless steel, 1,Applicable to ... , best results and fast.3,Diamond and ceramic material guarantee high efficiency and fine sharpening result.4,Accurate angle guide and constant ... voltage 100-240 VAC, 50HZ—60HZ.It has passed CE . Ceramic Knife Electric Diamond Knife Sharpener