LIFETIME EFFECTIVE: The coloured pencil sharpener has a strong, sharp blade that can cut over 800 times. This electric pencil sharpener is suitable for size 2 / 6-8 mm diameter pencils, coloured pencils, graphite pencils in wooden boxes, as well as round, triangular and hexagonal pencils. Efficient: This electric pencil sharpener is suitable for 2 AA batteries (not included), press the pencil to start working and sharpen automatically, works well with coloured pencils and pencils, sharpening pencils to a perfect tip in just 3-5 seconds. Get a lot of pencil sharpening done in a short time. Mini and portable pencil sharpeners are a classroom essential for teachers, children, students and artists. Versatile: manual mode and electric working state can be switched freely, just adjust the changeover button to ensure that the coloured pencil sharpener works even when the battery fails to power it. Makes for a wonderful time for you and your child or family to sketch and paint outdoors. Safety: The sharpener automatically stops working when the clear side cover is opened to avoid hurting your child's fingers. The portable pencil sharpener comes with a clear large capacity container for easy viewing of pencil shavings at all times and easy cleaning. If you have any questions, please feel free to contact us and we will be at your service within 24 hours. Happy shopping!