Bushnell Marine 7 x 50 Binoculars 28-5070. Brightness, clarity and resolution - nothing compares to what you see through Elite binoculars. Bushnell started with a blank sheet of paper and let 50 years of excellence in the field lead them to the very pinnacle of performance in sporting optics. With 90% light transmission, they're the brightest binoculars in their class. Premium BaK-4 roof prisms with PC-3 phase coating produce outstanding image clarity and contrast. Waterproof, fog proof construction and our patented Rain guard coating keep your view clear in any weather. The shape and weight are perfection as well, thanks to a streamlined, ultra-light magnesium chassis. Like all true masterpieces, Elite binoculars transcend comparisons. With XTR Technology As light passes through the many prisms and lenses of a roof prism binocular, some light is usually lost along the way. Bushnells exclusive new XTR technology - utilizing 60 layers of coatings on each prism - conserves harnesses and optimizes the available light. XTR delivers an amazing 99.73% light transmission per lens for a combined light transmission of 90%, makingthe Bushnell Elite series the brightest binocular in its class.