The COLEMAN waterproof 7x50 binoculars were designed for the nautical world and hunting enthusiasts alike. The 7x magnification and large 50mm objective lenses is the optimum design for marine and hunting applications, offering excellent resolution and detail from dusk till dawn. With its BaK4 porro prisms and fully multi-coated optics, you will always view a bright, clear image with sharp contrast and vivid detail. Nitrogen gas inside the binoculars prevents fogging and the accumulation of mold on internal lens surfaces, even under extremely severe conditions. The internal directional compass with illumination switch indicates your orientation so that you will always know that you are heading in the right direction. Heavy duty construction and superb engineering ensure continued waterproof performance.