The Bushnell Nitro 10x36mm Binoculars were built to deliver ample light transmission, superior contrast, and high-definition images - all in a lightweight and highly compact package. The Nitro Binoculars are treated with Bushnell's own EXO Barrier Protection coating, which molecularly bonds to the glass to repel water, oil, dirt and other debris off the lenses as well as preventing scratches. In addition, these binoculars are equipped with ED Prime Glass, PC-3 Phase coating, and have an IXP7 Waterproof rating. Features of the Bushnell Nitro 10x36mm BinocularsED Prime GlassEXO Barrier ProtectionPC-3 Phase CoatingBAK-4 PrismIXP7 Waterproof rating Bushnell Nitro 10x36mm Black Roof Prism FMC, UWD, EXO Barrier Binoculars BN1036B