The PS31 is a compact, lightweight dual night vision goggle system. It utilizes two high performance image intensifier tubes to provide extremely clear and crisp images under the darkest conditions. This dual tube design provides increased depth perception and outstanding clarity. A built-in IR lets the user easily read a map and function in a total darkness environment. The PS31's versatility and ease of adjustment is a standard for operators and tactical units. The new design and enhanced FOV, now 50 deg will give you the tactical advantage in the field, providing enhanced capabilities your team needs. ADDITIONAL ACCESSORIES A Mfg: Atn