The Carson, 3D Series High Definition Waterproof Binoculars with ED Glass is part of our 3D/ED Series Binocular line and combines dielectric prism coatings with ED glass. ED glass gives you the brightest, and clearest image possible. ED Glass reduces the amount of chromatic aberration that occurs as light passes through a binocular. Chromatic aberration presents itself as color fringes that appear around your viewing subject. Dielectric prism coatings greatly improve light transmission, brightness and provide clear, high contrast images that show accurate color reproduction. The Carson 3D binoculars with ED Glass are ideal for hunting or birding. Rubberized armor coating makes this full-sized 3D/ED Series binocular rugged and shock proof. The body is nitrogen purged and O-ring sealed making them waterproof and fogproof. Extra long eye relief with twist down eyecups make this full-sized 3D/ED Series glass binocular perfect for eyeglass wearers. The precisely placed thumb grooves, "just right" texturing and all-over lightweight body ergonomics make the 3D/ED Series binoculars perfect for long hunts or bird watching expeditions. The Carson 3D is also perfect for outdoor activities or sporting events.