This is a nice electric pencil sharpener. It can be powered by batteries or USB. It sharpens pencils nicely and does not break them. It sharpens graphite and colored pencils well. The container that collects the pencil shavings comes out easily to empty the contents. The pencil sharpener is lightweight. It is not very loud, which the noise is not a problem for me. The sharpener uses four AA batteries that are not included. The size of the sharpener is 3.1 x 3.1 x 3.1 inches.