Barska 20 x 50 Colorado binoculars offer a huge 50mm objective lens and 20x magnification which is ideal for long distance terrestrial viewing. This high magnification allows the viewer to magnify images for a closer look and see greater detail. This model maximizes light transmission for sharper images. Features high quality porro prisms, fully-coated optics, large center focus knob, and right eyepiece diopter adjustment. Rugged and durable rubber armor with non-slip grip. Ideal for all outdoor activities and sporting events. For convenience, includes a storage case as well as fold-down eyecups for viewing with or without eyeglasses.