This magnifier has a 4 X 2 inch glass lens, and weighs 1 pound, 6.8 ounces It is equipped with a multi-jointed flexible neck and a heavy weighted base The flexible neck is 9 inches long and will enable you to position it any way you like The large lens has 2.5 X power, and the smaller diopter lens has 5 X power This magnifier is illuminated by 3 LED bulbs, and requires 2 "AAA" batteries (not included)