Safety DeviceThe electric pencil sharpener is equipped with a safety device that prevents it from working if the cover is removed or installed incorrectly. This feature ensures that your child's fingers are protected when used alone. Efficient: Suitable for 2 AA batteries (not included), press the pencil to start working and automatically sharpen, well suited for colored pencils, pencils and only needs 3-5 seconds to complete the work. Complete many sharpening jobs in a short time Durable PerformanceA replacement blade holder is included to ensure the longevity of the sharpener. Simply twist the top safety cover to replace it. Easy to Clean: The knife sharpener has a large capacity shavings container that provides plenty of space for wood shavings without having to empty it frequently. The transparent housing allows you to see exactly when the sharpener is full, and the blades are removable for regular cleaning. Widely Use: Our cordless pencil sharpener is versatile and can be used in a variety of environments, making it an ideal assistant for children, teachers, artists, designers, offices, classrooms, daycares (kindergartens) and more, as well as for work well suited for left-handed and right-handed people!