This electric sharpener is suitable for pencils, crayons and charcoal. It has two openings which allow the user to select one of two pencil lead lengths and thicknesses. The sharpener can be charged via a computer using a USB connector or with a main adapter. When fully charged, it is capable of sharpening a pencil up to 300 times. Four LED lights indicate the device’s charge level. A blue light signals that it is ready to operate while a red light acts as a reminder to recharge it.