This premium, open-hinged short-to-long range roof prism ZULU7 lightweight binocular utilizes our industry leading HDX optical design that combines extra-low dispersion glass with high light transmittance glass to provide you with the maximum in color, image brightness, and absolute clarity. Fully multi-coated roof prism binocular incorporates super high reflectance phase-coated BAK4 prisms for unmatched resolution and image contrast. The ZULU binoculars incorporate a magnesium housing to ensure they can survive rugged conditions.Features:Ranked “Best of the Best” in 2016 by Field and Stream. Rugged and durable by design Tripod-compatible Includes tethered lens cover, strap, lens cloth, and padded case. Multi-position twist-up eyecups great for eye relief and allows a custom fit for each user. Waterproof and fog-proof performance IPX-7 rated for complete immersion up to 1 meter Durable rubber armor protects with an ergonomic non-slip grip design.