The Barska's 7 x 50 Battalion Military-Style binocular is ruggedly-designed and is 100% waterproof and fogproof. It comes with large 50mm objective lenses, fully multi-coated optics, BAK-4 prisms and plenty of magnification. Designed to meet military standards, the binocular is rubber armored for shock protection and a comfortable secure grip. Whether you're ashore or on the water, this binoculars is designed to perform in the most demanding conditions.