Nikon's black 8x30 Prostaff 7S Binocular combines optical performance with rugged construction details to create a versatile binocular that can be used at the stadium, in the woods, or on the boat. The Prostaff's environmentally friendly lead and arsenic-free Eco-glass is fully multicoated to maximize light transmission and reduce light loss. Complementing the lenses are phase-corrected and dielectric-coated roof prisms. The combination of glass and optical coatings produces high contrast views that are bright and clear with true color fidelity across the entire field of view. The 7S features a strong and lightweight fiberglass-reinforced polycarbonate resin body that makes it easy to pack and carry, with less fatigue while viewing through them. To withstand the elements wherever you use them the housing is O-ring sealed allowing it to be submersible to 3.3' for up to 10 minutes, and is nitrogen filled for fogproof performance. Black rubber armoring provides protection from drops and impacts, as well as a sure non-slip grip.