Cabela's relentless pursuit of superior optics led us to Europe, where we partnered with a glass company renowned for excellence. We asked them to improve our already excellent Euro binoculars by drawing on the level of expertise that prompted NASA to use their optics in the space shuttle and the U.S. Army to install them in tanks. The result is our Cabela's Instinct Euro HD 15x56 binoculars that deliver performance that matches or surpasses some of the best names in optics for a fraction of the cost. We upgraded our already outstanding Euro binoculars to create the Euro HD, binoculars that provide performance equal or superior to high-end binoculars costing hundreds of dollars more. Euro HD features a MeoBright 5501 fully multicoated optical system and phase-corrected prisms to deliver amazing 99.9% light transmission and nearly non-existent color distortion. You'll enjoy image clarity and true, rich, vivid color reproduction no other binoculars in this price range can surpass. All this outstanding optical performance is housed in a sleek, ergonomically designed aluminum-alloy body with a rugged layer of textured rubber armor to reduce carry weight and protect it from rough use. Each pair is completely nitrogen-purged, sealed and guaranteed to provide a lifetime of fogproof, waterproof performance. Other features include twist-up eyecups, an oversized center-focus wheel with an integrated adjustable diopter for instantaneous focusing and lens covers. Close focus: 16.4 ft. Minimum eye relief: 15 mm.