These black Leupold BX-3 Mojave 10x32mm binoculars feature a proprietary nitrogen fill process, synergy build, open bridge roof prism design, twist up eyecups, cold mirror prisms, smooth diopter focus, phase coated lenses, slim in-line design, fully multi-coated lenses, BAK 4 prisms, rugged waterproof armor, and a close focus distance of 10 feet.