Lightweight and more compact than comparably built binoculars, the next generation Cabela's XT 12x50 Binoculars provide the superior light-gathering power and optical clarity of phase-coated optics at a fraction of the price. Fully multicoated lenses enhance light transmission for maximum clarity. Mirror-coated prisms increase image brightness. Long eye relief gives eyeglass wearers a full field-of-view. Diopter lock system for sharp, clear image adjustments. Perfect internal focus system. Nitrogen filled for fogproof protection. Twist-up eyecups and a rugged, rubber armoring.