Nikon Trailblazer 10 x 42mm All-Terrain Binoculars: Waterproof and fogproof Nitrogen filled and o-ring sealed Rubber, armored body Turn-and-slide eyecups Multi-coated lenses for bright, clear images Magnification: 10x Objective lens diameter: 42mm Angular field of real view: 5.6 degrees Angular field of apparent view: 52.1 degrees Field o...