Multifunctional Knife Sharpener Kitchen Double-Sided Electric Knife Sharpener Description This is an automatic sharpener, as long as you put all kinds of knives on the grinding wheel, you can sharpen more Sharp, several times faster than ordinary sharpeners, easy to sharpen without physical effort Instructions Connect the power supply, put the knife at 45 degrees, sharpen the knife in both directions Parameter Size: 22x6x7cm material: plastic USB rated voltage: 5V Contain 1x electric sharpener Precautions 1. Please make sure that the voltage used is consistent with the rated voltage of the machine, and the power is turned off and plugged in everywhere 2. To prevent clicking, please do not immerse wires, plugs or other liquids into the machine 3. It is forbidden to store in humid environment, and the machine is not allowed to be washed or used in contact with water 4. Grinding does not require any oil, water or abrasive 5. Do not grind tools with serrations or sharp corners 6. Please turn off the power and pull out the plug before cleaning the debris 7. When the machine is not in use, please pull the plug out of the socket 8. Do not put the machine near the electric stove and oven 9. During operation, the knife should be polished for two or three times at an angle of 45 degrees. It should be used for 5 minutes and stopped for about 10 minutes