Quick Sharpening: This electric pencil sharpener is equipped with a high-power motor which could sharpen your pencil within 5 seconds..Electric & Battery Powered: Our pencil sharpener is powered by 2 AA batteries or USB cord. The battery power mode is convienent for outdoor using. And the USB power mode provides a strong, stable power for quick sharpening. The two power mode is greatly extending the using occasions of pencil sharpener in working or studying. (Batteries are not included).New Sharpening Blade: The blade of this pencil sharpener is made of tungsten steel which makes the blade harder than normall alloy blade. Each life span of tungsten steel blade is more than 5000 times. And the thickness of the blade is 2mm which is thicker than the 1mm of normal blade. It makes sure that our pencil sharpener could sharpen pencil quicker and smoother..Three Sharpening Options: Our pencil sharpener provides you 3 sharpening options-Blunt, Medium, Sharp. Both of the 3 options will not be sharpened too long or too sharp that prevents the pencil lead breaks on the paper..For 6-8mm Pencils: our pencil sharpener is designed for almost of all 6-8mm pencils, especially the colored pencils. Colored pencils have softer lead than other pencils so that we design a new structure to prevent the lead from breaking.