Vortex Viper HD 10 x 42 Binocular The Viper® HD Premium optics and rugged construction in a tremendously compact, lightweight package What more could you need? Well, perhaps a quality chest harness to comfortably and securely carry your investment in the field, but thats included, too! Hunters, shooters and outdoor enthusiasts alike are sure to benefit from the high performance of the Viper HD binoculars. Features: HD Lens Elements XR Fully Multi-Coated Dielectric Prism Coatings Phase Correction Waterproof Fogproof