Stainless steel frame with acrylic housing and 2 aspheric lens: rectangular, 1 1/8 x 1 1/2 (30 x 37 mm) with 2.5X, round, � (15 mm) diameter with10x magnification. 3 lighting functions: powerful 3-LED flash light (sideways), 1-LED research light (down), simple 395nm long-wave UV light (down). Also includes pull-out mini ball-point pen and leatherette case. 3 LR927 batteries incl. Dimensions: 1.125 x 1.5 in (30 x 37 mm) (rectangular) and .5 in (15 mm) (round).(LU175LED)