When it comes to Pencils, a good pencil sharpener is essential to keep your writing tools in the best physical shape. Electric pencil sharpeners are of the utmost importance in schools and offices.Outstanding Product Features Small and lightweight Powered by batteries or USB plug Fast sharpening Safety feature for kids Non-skid rubber pads Easy to clean Environment-friendly material of constructionSpecifications The diameter of pencils: 0.31 inch (8mm) Dimensions: 3.5 x 1.6 x 3 inches Unit weight: 3.35 oz (95 g) Sound: less than 82 dB (tolerable)Notice: You have to hold the pencil sharpener with one hand and your pencil with your another hand while sharpening pencils. Remove your hand pressure on the pencil, and it will stop working. In all, no hand pressure on the pencil, no working.QASQ1: Are the batteries included?A: No, batteries and adaptor are not included, but USB cord is included in the package. Q2: Can this electric sharpener be used to sharp crayons and eyebrow pencils?A: No, it can only sharp #2 pencils and colored pencils.Q3: Will the blade be replaced?A: Yes, the blade is replaceable, but this item comes with only one blade, you need to buy an extra one if you want to replace the old.Q4: Does the pencil get jammp?A: Generally not, you could open the scrap box and clean the broken lead. Because the blade is removable.