Key operation, easy to sharpen knives, no need to use expensive sharpening or lapping oils. Sturdy ABS shell, high quality white corundum impeller, durable and durable. Clean the knife surface before sharpening, no need for assistant liquid such as water or oil. Powered by USB, easy to connect to AC adapter, power bank and more . Rest for 10 minutes after 5 minutes of use each time for safety reasons. Widely used in home kitchen knives, chef's knives, fruit knives, scissors and more types of knives. Does not apply to curved or serrated knives. Precautions 1. Connect the power when the power switch is off; 2. Do not pull the power cord forcibly; 3. The power input line of this product should be connected to the rated voltage of 220V; 4. It is recommended to place it in a place inaccessible to children, and it is for adults only and children are strictly prohibited 5. It is forbidden to store in a humid environment; 6. It is recommended to stop for ten minutes when the using time is about 5 minutes 7. It is strictly forbidden to wash the body and use it in contact with water; 8. The operation is used in the confirmed state; 9. Make sure to watch the tutorial before use and use it according to specifications; 10. Our store is not responsible for personal injury caused by improper operation. Note: 1. NOT waterproof. 2. Keep away from children. 3. Turn off when cleaning or not in use. 4. Size and color may be slightly different due to manual measurement and different lighting condition. Thank you for your understanding. Specifications: Color: black and white Material: ABS + PP + white corundum Power supply: USB cable Item size: 23 * 6.5 * 10cm / 9.1 * 2.6 * 3.9inch Package size: 22 * 11 * 7cm / 8.7 * 4.3 * 2.8inch Package weight: 270g / 9.5oz Package List: 1 * Electric Knife Sharpener Note: It does not include other things, the color is based on the first picture, and other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you!