Lightweight, adjustable Optelec Power TV Glasses provide 2.1X magnification ideal for distance viewing. These comfortable glasses are perfect for watching television, movies, sporting events or other activities. Using a fully adjustable twin-lens design to set a desired viewing distance, the easy-to-use glasses will maximize the size of your television screen and provide complete enjoyment of multiple activities. Optimal focal distance of 10 ft. Weighs only 1.7 oz. Includes a micro-fiber cleaning cloth and protective carrying case. Limited One Year Warranty.