Outfitted with extra low-dispersion (ED) glass, fully multi-coated optics, and BAK4 prisms, Barska's black 10x42 Level ED Waterproof Binoculars present clear and crisp high-contrast views with accurate color representation across a distortion-free and wide field of view. Complementing the optical performance are argon-filled and O-ring sealed optical tubes that provide a water and fogproof performance in all weather conditions. To withstand the rigors of the trail, the chassis is wrapped in a protective rubber armor that is textured to ensure a secure slip-resistant grip. The combination of optics and construction details make the Level ED binoculars an ideal addition to your kit — whether you're in the woods, on the range, at the stadium, or sightseeing around town.