HD optics, rugged performance and high end form-factor in a value-price binocular? Check out the Vortex Crossfire HD. Optimized with select glass elements to deliver exceptional resolution, cut chromatic aberration and provide outstanding color fidelity, edge-to-edge sharpness and light transmission. Add in the included GlassPak binocular harness for quick optic deployment in the field and superior protection and comfort. 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 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 Adjustable Eyecups Twist up and down for comfortable viewing with or without eyeglasses Center Focus Wheel Adjusts the focus of both binocular barrels at the same time Diopter Adjusts for differences in a user's eyes. Located on right eyepiece Tripod Adaptable Compatible with a tripod adapter, allowing use on a tripod or car window mount What's in the box : GlassPak binocular case GlassPak case harness Rainguard eyepiece cover Tethered objective lens cover Comfort neck strap Lens cloth