... 1,Please read all instructions carefully before use.2,To protect against the risk of electronic shock, ... on a stable work surface when using.6,Do not close the hot objects.7,Do not attempt to ... 7,Applicable voltage 100-240 VAC, 50HZ—60HZ.How to useFirst ensure the power switch of the sharpener ... .Under normal circumstances, it is suggested to use weekly or daily, to keep your blade sharp at any time ...