Make faraway objects come into pristine focus with the Nikon Premier 10 x 42 Binoculars, which feature fully multicoated lenses and phase-corrected prisms with silver coatings. These binoculars are designed with a lightweight magnesium-alloy body that is filled with nitrogen and sealed with an O-ring for fog-proof performance. Turn-and-slide rubber eyecups. Environmentally sound Eco-Glass. Waterproof construction.