... sharpening, make sure that the knife is clean, and sharpen knives according to the instructions.4,Make sure the switch is ... Stainless steel decoration creates a noble, bright appearance, and easy to clean.6,Replaceable sharpening head, extend product life, economic and ... protection.7,Applicable voltage 100-240 VAC, 50HZ—60HZ.How to useFirst ensure the power switch of the sharpener is disconnected ...