Five interchangeable lenses with 5 magnification powers/focal range (viewed object distance from lens) 1.0X 24″, 1.5X 15″, 2.0X 7-11″, 2.5X 6-10″ and 3.5X 4-7″.
Made from high-density acrylic, the lenses are polished much like glass lenses and offer excellent clarity but at a fraction the weight. Surface-hardened to help prevent scratches.
Protective storage case included. Comfortable eyeglass frames for quick on/off or for more secure fit, switch to elastic headband.