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: Premium, lightweight short-to-long range open-hinged binoculars Ranked best of the best in 2016 by field and stream Rugged and durable by design Tripod compatible Multi-position twist-up eyecups - great for eye relief and allows a custom fit for each user Waterproof and fogproof performance - IPX7 rated for complete immersion up to 1 m Durable rubber armor protects with an ergonomic non-slip grip design Polymer frame material