The Steiner Optics reputation for combat-worthy performance, toughness and dependability was earned the hard way: in battlefield and tac ops situations around the world. These tactical binoculars reflect hard-won experience with features, ergonomics and visual excellence that are unsurpassed anywhere, and rugged reliability that can survive anything. Whether you need a pocket-sized compact for your gear bag or a full-sized model to spot for your shooter, the Tactical Series will serve you well. Features Roof Prism DesignExceptionally lightweight, compact, and streamlined, it&';s easy to pack, carry, hold, and utilize. High-Definition OpticsOur high-definition optics feature the highest quality index-matched glass and advanced lens coatings, delivering best-in-glass image clarity. N2 injection(TM) SystemEffectively seals 14-psi pressurized dry nitrogen into the optic, ensuring fogproof clarity in all conditions, from arctic cold to desert heat. Fast-Close-Focus(TM)The central focusing wheel requires minimal rotation for quick, absolute sharpness from close up to infinity. ClicLocA(R) SystemAllows for instant attachment and release of the neck strap or harness with the simple push of a button. Designed to ensure that binoculars hang straight and are always action-ready.