You know what they say about people who assume you cant get HD optics, rugged performance and high end form-factor in a value priced binocular? They clearly havent seen the Crossfire HD! The included GlassPak binocular harness allows for quick optic deployment along with superior protection and comfort. The Crossfire HD is a rare find in entry-level optics.SpecificationsMagnification 10 xObjective Lens Diameter 50 mmEye Relief 17.0 mmExit Pupil 5 mmLinear Field of View 320 feet/1000 yardsAngular Field of View 6.1 degreesClose Focus 6.0 feetInterpupillary Distance 60 76 mmHeight 6.7 inchesWidth 5.3 inchesWeight 30.4 ouncesOptical FeaturesHD 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 FeaturesRubber 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.Convenience FeaturesAdjustable Eyecups Twist up and down to precise, intermediate settings to maximize custom fit for comfortable viewing with or without eyeglasses.Centre 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.