The Sig Zulu7 premium, open-hinged short-to-long range roof prism 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 BAK-4 prisms for unmatched resolution and image contrast. The ZULU binoculars incorporate a magnesium housing to ensure they can survive rugged conditions. Tripod compatible. Includes eyepiece and objective lens covers, deluxe neck/shoulder strap, lens cloth and padded ballistic nylon case.