Nikon 10x42 black ProStaff 7S Binoculars represent the most powerful model within the flagship line of their ProStaff series. They come outfitted with an array of optical and design features to give users the ability to discern details at a distance—in even the most challenging light and harshest weather. They feature phase-corrected roof prisms that have been further treated with highly reflective mirror coatings, and anti-reflection fully multicoated optical surfaces that work together to maximize light transmission, while limiting internal diffraction and interference, to produce bright and clear high-contrast images with accurate color rendition across the entire visual spectrum. The 42mm objectives boost their light-gathering ability to improve views in challenging light such as at dawn and dusk, or in foggy and cloudy weather, without the bulk and weight of larger-objective models. Their spacious apparent angle of view helps to mitigate the appearance of visible hand shake that is often associated with holding powerful optics such as this and minimizes the movement of the horizon line on rough or rolling seas to limit disorientation when using them on a boat. The combination of prisms, coatings, and comfortable eye relief allows users to enjoy an immersive observational experience from early morning to late evening. Complementing the optical performance are construction details that make the binoculars durable and comfortable to use. They have a lightweight and corrosion-resistant reinforced polycarbonate resin chassis and is protected by black rubberized armor that is accented with textured palm pads to give them a secure non-slip grip. The optical tubes are nitrogen filled and O-ring sealed to be waterproof and submersible, as well as resistant to internal fogging when moving through extreme temperature variations and environmental conditions. A tethered one-piece ocular rainguard covers the eyecups as the binoculars hangs around the neck and prevents rain and spraying water from filling them. The objective lens caps can clip onto the neck strap to keep them safe from blowing overboard or being lost on the forest floor. Whether you're hiking, hunting, birding, or boating, this ProStaff will quickly become indispensable for all your outdoor activities.