The Celestron Nature DX ED 8x42mm Binocular delivers edge-to-edge clarity with excellent colour correction and razor-sharp images. The Nature DX ED 8x42 binocular provides high-level outdoor performance – making it a perfect choice for avid birders and outdoor enthusiasts. With 8x magnification and 42mm objective lenses, alongside a close focus of just 6.5 feet , it is ideal for viewing butterflies, plants, birds or other wonders of nature. However, it also offers the magnification needed to get great views of distance subjects, plus a wide field of view so you can easily follow them as they move. No matter how you choose to observe, this versatile binocular is an excellent all-around performer. The fully waterproof rubber-coated body is composed of lightweight and durable polycarbonate , making it tough enough to stand up to hard use in the field . It is also filled with dry nitrogen gas to prevent internal fogging of its Extra-Low Dispersion (ED) Lenses. The ED lenses virtually eliminate chromatic aberration (also known as colour fringing) - a visual defect common in other binoculars. Depth: 142 MM Extra-Low Dispersion objective lenses provide high resolution, high contrast images that are virtually free of defects like chromatic aberration Fully multi-coated optics deliver maximum light transmission through the optical path Phase coated BaK-4 prisms produce vivid, true-to-life colors Tripod adaptable Limited Lifetime Manufacturer Warranty Height: 56 MM Width: 128 MM