Bushnell Engage EDX Binoculars, ED Prime Glass Binoculars with EXO Barrier Protection for Adults - The Engage EDX - A best-in-class optic with industry-leading features. The entire line is backed with the all-weather assurance of Bushnells exclusive EXO Barrier lens coating - it repels water, debris, oil and fog. The fully multi-coated optics offer maximum brightness and clarity, and theyre housed in a lightweight and rugged magnesium chassis - ED Prime Glass - Bushnells highest quality glass delivers amazing color, resolution and contrast, even in low-light conditions - Exclusive EXO Barrier Protection - Bushnells newest and best protective lens coating molecularly bonds to the glass, repelling water, oil, dust, debris and preventing scratches - Dielectric Prism Coating - Applied to the prisms, it ensures vivid color reproduction and allows 92% light transmission for bright images - Waterproof Design - Lightweight yet rugged magnesium chassis is fully waterproof