Vortex Viper HD Binoculars range, inclusive of Vortex Viper HD Binoculars, is exactly what you require for a successful hunting experience. It brings on board award-winning optics, compact size, single-hinge design and the capability to offer reliability in challenging conditions. Belonging to the league of the lightest full-size binoculars available, its resolution is undiluted even while scanning the landscape at longer distances. Features consist of premium HD lens elements with (High Density) extra-low dispersion glass for High Definition images; XR fully multi-coated air-to-glass surfaces for maximum light transmission; Argon gas purging for fogproof performance; O-ring seals for waterproof performance; and ultra-hard, scratch-resistant ArmorTek coating on exterior lenses. The performance of Vortex Viper Binoculars is further enhanced with attributes such as dielectric prism coatings, diopter on the right eyepiece, roof prism design for durability and compactness, center focus wheel for focus adjustment of both the barrels, adjustable eyecups to maximize custom fit, o-ring for waterproof integrity, argon gas purging for fog proofing, etc. Vortex Viper Top Features HD Lens Elements XR Fully Multi-Coated air-to-glass surfaces Dielectric Prism Coatings Phase Correction Roof Prism Waterproof, Fogproof construction ArmorTek coating Locking Diopter Center Focus Wheel