Economy Binocular Magnifier with BONUS 4 lenses

Economy Binocular Magnifier Includes 3 FREE additional lens of different power and focal length. (An $18 Value!) Gives you 3-dimensional viewing by providing magnification for both eyes. Installed optical quality glass lens magnifies objects 2-1/2 times at a working distance of 8 inches. Includes 3 additional interchangeable lens plates for other magnifications (see chart). Fully adjustable to fit all head sizes. Tilts up and out of the way when not in use and can be worn over glasses. Lens Chart: Lens # 2 Magnification, 1.5X Focus Distance 20 Lens # 4 Magnification, 2X Focus Distance 10 Lens # 5 Magnification, 2.5X Focus Distance 8 (Installed) Lens # 10 Magnification, 3.5X Focus Distance 4