Vortex Crossfire HD 8x42 Binoculars. You know what they say about people who assume you can't get HD optics, rugged performance and high end form-factor in a value-price binocular? They clearly haven't checked out the Crossfire® HD. Add in the included GlassPakTM binocular harness for quick optic deployment in the field and superior protection and comfort - The Crossfire® HD truly is a rare find. OPTICAL FEATURES HD Optical System Optimized with select glass elements to deliver exceptional resolution, cut chromatic aberration and provide outstanding color fidelity, edge-to-edge sharpness and light transmission. Fully Multi-Coated Increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces. CONSTRUCTION FEATURES Rubber Armor Provides a secure, non-slip grip, and durable external protection. Waterproof O-ring seals prevent moisture, dust and debris from penetrating the binocular for reliable performance in all environments. Shockproof Rugged construction withstands recoil and impact. Fogproof Nitrogen gas purging prevents internal fogging over a wide range of temperatures. Roof Prism Valued for greater durability and a more compact size.