Product name: Pencil Sharpener Gear: 3-2-1 ( Tip - Flat - Blunt ). Available ID: 6-12mm. Item number: MS8028 Type: 8028 Shape: geometric type Model Number: School supplies electric pencil sharpener Type: Electronic Age: Greater than 3 years old Application: Pencils, charcoal, colored pens Charging method: USB Applicable battery type: 2000 mAh lithium battery(with battery) Just 3 steps, First, Push the pencil in the hole and hold the pencil with the small strength, Then, it will stopped by itself when it's done, Finally, pull it out with your hands. 1. After opening the lid , take out the waste box 2. Press and hold the body and rotate the knife holder cover counterclockwise. 3. Take out the knife holder and replace it with a new one 4. After installing the knife holder, buckle the knife holder cover down and turn it to the left to tighten it. When attaching the knife holder cover, please align the bayonet with the position of the cutting head below 5. Put the waste box into place, and then fasten the cover,Lightly press the pencil to start, do not press down hard, there may be more pen sharpening. 6. Semi-automatic , More faster and easy. 7. Low noise design: Below 70 points. 8. Waste Bucket: Large space, easy to dump and clean. 9. There are 4 pcs silicone non-slip gasket on the base, can prevents abrasion, keep stable and quiet. Colour:black Material:Plastic + Metal Package Contents: 1 * pencil sharpener 1 * usb charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.