Features: 1.The lithium batteries have a large capacity of 2000mA, and support the sharpener to work when charging. 2.Automatically eliminates the broken pencil core, no manual cleaning is required. 3.Large and short holes can be switched and sharpen three kind of pencil nibs. Using the short hole, the length of pencil tip is between 8-15mm, diameter is 0.6mm. Using the long hole, the length of pencil tip is between 18-25mm, diameter is 1.0mm. Using t 4.Made of high quality ABS and PC, durable for use. 5.This sharpener is suitable to the pencil whose diameter is between 6-8mm. A soft pencil, can use the short hole first and then the long hole. specification: This electric sharpener has three charging types, you can bring it anywhere you want and do not worry about power, it can work when charging. Three sharpening effects gives you different pencil nibs to drawing, and sketching. A automatic sharpener requires no manual cleaning. The lithium batteries have a large capacity of 2000mA, and support the sharpener to work when charging. Automatically eliminates the broken pencil core, no manual cleaning is required. Large and short holes can be switched and sharpen three kind of pencil nibs. Using the short hole, the length of pencil tip is between 8?15mm, diameter is 0.6mm. Using the long hole, the length of pencil tip is between 18?25mm, diameter is 1.0mm. Using the short hole first and then the long hole to sharpen, the length of pencil tip is between 18?25mm, diameter is 0.6mm. Made of high quality ABS and PC, durable for use. This sharpener is suitable to the pencil whose diameter is between 6?8mm. A soft pencil, can use the short hole first and then the long hole. Three charging models, you can use charger, USB cable or the lithium batteries to charge. : : TENWIN Model: 8009 Material: ABS + PC Color(Optional): White, Black Power supply charging types: charger/USB cable/lithium battery Plug type: US plug Sharpen mode: Electric Input voltage: 100?240V 50/60Hz 0.35A Output voltage: 5V 2000mA Suitable pen diameter: 6?8mm Size(H*D): Approx. 17 x 8cm / 6.7 x 3.1inch Weight: 622?627g Package List: 1 x Electric Pencil Sharpener 1 x Charger Note: New and old types are shipped randomly