Top-quality waterproof, nitrogen-filled observation binocular with individual helical eyepiece focusing, designed for medium-to-long-range terrestrial and astronomical observations. Incorporating oversized BAK-4 prisms and a fully broadband multi-coated optical system. Top quality triplet objective lenses provide semi-apochromatic optical performance. Features two eyepiece pairs of 25x and 40x magnifications, on a rotatable mount, for ultra-quick and convenient magnification changes, offering excellent versatility for both terrestrial and astronomical viewing. Features built-in lens hoods, finderscope shoe and carrying handle. High quality precision all-metal construction. Supplied with heavy-duty hardwood tripod and integral steel tabletop tripod. Binocular supplied in foam-lined storage/carrying case.