Features: Automatic Sharpening: Electric pencil sharpener, fast sharpening, saving time and effort. Automatically stop working after sharpening the pencil at a perfect point, protect the tip. Adjustable Sharpness: With a control knob to adjust the thickness of the nib, sharp, medium and blunt for option, can meet all kinds of writing needs. Support sharpen 6-12mm pencils, color pencils, carbon pencils, etc. Long Endurance: Built-in 2000mAh rechargeable battery, once charge can use more than 300 times. Support powered by computer, laptop, power bank, etc. Durable and Reliable: High quality ABS shell and alloy spiral blade, sturdy, durable and wear resistant. Open box power-off design, very safe even for children. Great Gift: Low noise and easy to clean, the pencil sharpener can be a pretty gift for children, students, teachers, artists, etc. Specifications: Color: Black/ White(optional) Material: ABS Compatible Pencil Diameter: 6-8mm Battery: Built-in 2000mAh Lithium Battery Item Size: 17.5 x 9 x 9cm/ 6.9 x 3.5 x 3.5in Package Size: 19.2 x 9.4 x 9.4cm/ 7.6 x 3.7 x 3.7in Package Weight: 580g/ 20.5oz Packing List: 1 x Pencil Sharpener 1 x USB Cable 1 x User's Manual