Nikon Prostaff 5 Binoculars 12x50mm 4.7° more natural clearer view Black AU STOCKPROSTAFF 5 binoculars are Nitrogen filled and O Ring sealed for complete waterproof and fogproof performance. Nikon Prostaff 5 12x50 Binocular One of the lightest binoculars in its class. Fully multilayer coated lenses ensure image brightness and a crisp, clear visual experience. All lenses and prisms are made with Nikons Eco Glass, which is free of lead and arsenic. The fiberglass reinforced polycarbonate design is highly durable, waterproof and