A. 【Quick Sharpening】 When you press the pencil, it will sharpen automatically. The blade rotates after sharpening, but the pencil will not be sharpened. You can feel the tip and take out the pencil. It will not remain sharp, so the pencil will not be wasted. The process only takes 3 - 5 seconds. B. 【Quickly sharpen all standard 6 - 8mm pencils】 Colored and traditional graphite pencils, suitable for round, triangular and hexagonal pencils. Use with popular wooden graphite and colored pencils. Not suitable for wood - free pencils. C. 【Portable】 The sharpener is small and portable. No plug restrictions, no need for wires. Safe and efficient. Suitable for children, teachers, artists, professors, engineers, architects and fashion designers to make drawing and writing easier. One blade can be sharpened more than 300 times. It comes with 2 replacement blades, which extend the life of the sharpener.