Vortex Viper HD 10x42 BinocularsViper HD 10x42 Binoculars The Viper HD a premium quality binocular packed with everything you need and nothing you don't. Rugged, compact and lightweight (one of the lightest full size binoculars to date), it's easy to see why the Vipers are award winners. Add in HD (High Density) extra low dispersion glass for impressive resolution and color fidelity and the Vipers change more than the game. They change the results, too. Included in the boxes