Keep your eye on the prize when you use the Celestron Nature DX ED 8 x 42 Binoculars. These binoculars are equipped with Extra-Low Dispersion (ED) objective lenses, multicoated optics and phase-coated Bak-4 prisms for crisp, clear and vibrant viewing. The rubber-armored polycarbonate housing with a waterproof finish provides durability, and the twist-up eyecups deliver comfortable use.