Lighthouse Pull-Out 20X Magnifier with LED LU30LED This pocket-sized 20X magnifier has a 13/16" (21mm) diameter lens which pulls out of a protective case When open the entire magnifier measures 2-1/8" x 1-5/16" x 15/16" (54 x 34 x 23mm). The case and frame are made of black matt plastic. A powerful LED operates on 3 LR1130 batteries (included).