Vanguard Spirit ED 8x36 Binocular 338192 is an ergonomic, easy to use pair of binoculars for medium-range observation. Equipped with a BaK4 roof prism and high quality, extra-low dispersion glass, these Vanguard binoculars have a light transmission rate of 90%, more than enough for most casual needs at any time of day. These Spirit ED binoculars feature an advanced lens and prism design that makes full use of the anti-glare coated, phase coated, high precision ED glass, allowing you to see nature and its creatures like never before using the Vanguard Spirit ED 8x Phase Coated Binoculars. Almost anyone can comfortably use these binoculars, since they boast user-friendly features, with a lightweight, comfortable-to-hold body design, twist-out eyecups for long eye relief, and a large focus adjustment wheel. Like all binoculars in the Vanguard Spirit ED series, the 8x36 model is completely waterproof and fog-proof, so it can stand up to all weather conditions. Vanguard has designed an excellent pair of sporting binoculars with the Vanguard Spirit ED 8x36 Waterproof Binoculars.