Features *【Professional sharpening】 *【Dual-Stage System】: Dull, damaged and brittle knives can be reshaped in the first stage and polished and honed in the second stage. *【Safe & Easy To Use】: There is no risk involved in its operation. Simply position the dull blade on the sharpening slot and enjoy razor-sharpness in just seconds. *【Cordless Design】: Compare traditional wired knife sharpeners, this knife sharpener can be used anywhere, It is compact and easy to store .The USB interface can easily complete the charging even use a mobile power supply. Fully charged, the knife can be sharpened 50 times. Name: Electric knife sharpener Material: ABS+stainless steel Dimensions: 7.8 x 2.7 x 2.3 inches Battery: 1800mAh Power supply: USB charging Package includes: 1 x Electric knife sharpener.