The Celestron Regal ED 8x42 Roof Binoculars are designed for nature watching, birding, and outdoor activities. They feature Extra-low Dispersion (ED) glass to virtually eliminate chromatic aberration and provide sharp images with true-to-life color. The fully multi-coated BaK-4 glass optics maximize light transmission for bright, highly detailed images. These binoculars offer accurate color resolution and expansive fields of view. They are waterproof and tripod adaptable, making them versatile for various observation needs. The robust, mid-sized body is ergonomic and durable, while metal twist-up eyecups ensure comfort for both eyeglass wearers and non-eyeglass wearers. They come with a soft carrying case and a Limited Lifetime Warranty. The 8x magnification and 42mm objective lens provide a balance of light-gathering ability and portability, with a close focus of 6.5 feet.