The ZULU9 combines superior optical performance with in-the-field utility. High quality glass, fully multi-coated Spectracoat lenses, and phase-coated Abbe-Konig prisms provide maximum brightness, contrast and crisp resolution. The ZULU9 performs in the harshest conditions, giving unmatched performance in inclement weather or rugged terrain. ZULU9 barrels are nitrogen-filled and will not fog in cold, wet weather. The ZULU series binoculars incorporate a rugged and durable magnesium housing that is tripod-compatible. Made of durable rubber armor protects and provides an ergonomic non-slip grip design. Also includes tethered lens covers, strap, lens cloth, and padded case. It has a multi-position twist-up eyecups create generous eye relief. All ZULU binoculars are waterproof and fog-proof performance and are IPX-7 rated for complete immersion in up to one meter of water.