DetailsCrafted for those who demand optical excellence in the field, the SIG SAUER ZULU4(TM) HD binoculars deliver elite performance from sunrise glassing to last-light observation. Featuring SIG SAUER&&';;s premium high-definition glass for unmatched resolution and light transmission, the ZULU4 HD is packed with proprietary coatings-SpectraCoat(TM), LensArmor(TM), and LensShield(TM)-to reduce glare, resist wear, and stay protected in the harshest conditions. A rugged yet lightweight magnesium housing wrapped in armor makes the ZULU4 HD as tough as it is refined. With newly redesigned focus and diopter controls, this field-ready optic offers precision tuning right at your fingertips. Whether you&&';;re glassing across open ridgelines or observing tight timber, the ZULU4 HD keeps your vision sharp and your target clear. ZULU4 HD FEATURES HD Glass lenses deliver exceptional clarity and superior brightness for a high-resolution sight picture. Proprietary anti-reflective SpectraCoat(TM), LensArmor(TM), and LenShield(TM) technologies Updated locking diopter ring and 2 position adjustable eyecups Newly redesigned focus wheel with a new precision contour overmold provides ultra-fine focal adjustment The ZULU4(TM) HD features a reinforced metal housing wrapped in rubber armor, offering durability with a sleek appearance New molded EVA carrying case for streamlined protection Capable of being mounted to tripod adapter using a standard 1/4"-20 threaded insert IPX7 waterproof and fogproof rated