Vanguard Spirit ED 10x42mm Binocular 338215 features ergonomic design and advanced optics. These Vanguard Spirit ED binoculars have a light transmission rate of up to 90%, resulting in a crystal-clear viewing experience at almost any time of day. The advanced lens and prism design of these binoculars utilize high-quality ED (Extra-Low Dispersion) glass, which means you'll get up-close and personal with nature, showing you minute details you never would have noticed without the Vanguard Spirit ED 10x Anti-Reflective Binoculars. These easy to use Vanguard binoculars boast user-friendly features, too. Vanguard has equipped the Spirit ED with a lightweight, comfortable-to-hold body design, twist-out eyecups for long eye relief, large focus adjustment wheel and 100 percent waterproofing, so the weather will never slow you down. The Vanguard SpiritED 10x42 Waterproof Binoculars will be a great addition to your outdoor gear.