Sig Sauer ZULU6 HDX PRO Full Size Binocular - 18x50 - The ZULU6-HDX PRO Image Stabilized Binoculars set a new standard in optical clarity and stabilization with reengineered lens coatings, prescriptions, and settings that are built to impress even the most discerning optics aficionados. The ZULU6-HDX PRO combines ample power with a generous Apparent Field of View (AFOV) and light gathering capability as the result of the larger 50mm objective lenses. SIG SAUER's new HDX PRO lens system significantly reduces ambient glare, improves overall light transmission by 25%, and increases color accuracy to deliver an unrivaled Twilight Factor during the most critical moments of the day. OmniScan is the latest OIS (Optical Image Stabilization) software update which seamlessly blends Scan and Target modes using a digital accelerometer to automatically adjust the degree of stabilization based off movement. The slower the binoculars move, the greater the degree of stabilization applied and vice versa. OmniScan eliminates the need to toggle between settings, delivering the most advanced stabilization experience we've ever created. The ZULU6-HDX PROs are powered by two common AA batteries, providing 40+ hours of constant runtime. The battery compartments have been relocated to opposing sides of the binocular body, creating a more comfortable in-hand feel. Features SIG's next generation OmniScan OIS technology enhances image stabilization using a digital accelerometer to optimize the level of stabilization applied based off your movement and vibration for the most advanced Optical Image Stabilization system we've ever developed; HDX PRO optical system combines fully redesigned ED glass lenses, prism, and prism coatings to deliver significantly enhanced light transmission and glare reduction; 2deg image compensation angle; Powered by (2) AA alkaline batteries capable of generating up to 40 hours of runtime; User ergonomics enhanced as a result of relocated battery position and upgraded texture on the diopter adjustment ring and main focus wheel; 10-minute auto shutoff feature; IPX-7 waterproof, and fog proof rated; Includes foam carrying case and neck strap.;