Viper HD binoculars are an optical masterpiece, giving outdoor enthusiasts a premium option without the premium price tag. The HD optical system delivers stunning resolution, color fidelity and edge-to-edge clarity. These are one of the lightest, most compact, full-size binos on the market-a noteworthy attribute when gear consideration can be measured in grams. Includes GlassPak chest harness, keeping your binos at the ready while providing comfortable, protected, strain-free, all-day carry.Included in the BoxRainguard Eyepiece CoverTethered objective lens coversComfort neck strapGlassPak Binocular HarnessMagnification 8xObjective Lens Diameter 42 mmEye Relief 18 mmExit Pupil 5.25 mmLinear Field of View 409 feet/1000 yardsAngular Field of View 7.8 degreesClose Focus 6.5 feetInterpupillary Distance 56-75 mmHeight 5.6 inchesWidth 4.9 inchesWeight 24.5 ozOPTICAL FEATURESHD Lens Elements Premium extra-low dispersion glass delivers the ultimate in resolution and color fidelity, resulting in high-definition images.XR(TM) Fully Multi-Coated Proprietary coatings increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces.Dielectric Coating Multi-layer prism coatings provide bright, clear, color-accurate images.Phase Correction Coating on roof prism models enhances resolution and contrast.CONSTRUCTION FEATURESRoof Prism Valued for greater durability and a more compact size.Waterproof O-ring seals prevent moisture, dust and debris from penetrating the binocular for reliable performance in all environments.Fogproof Argon gas purging prevents internal fogging over a wide range of temperatures.ArmorTek A(R) Ultra-hard, scratch-resistant coating protects exterior lenses from scratches, oil and dirt.Rubber Armor Provides a secure, non-slip grip, and durable external protection.CONVENIENCE FEATURESAdjustable 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.Locking Diopter Adjusts for differences in a user’s eyes. Located on right eyepiece, locks at preferred setting.Tripod Adaptable Compatible with a tripod adapter, allowing use on a tripod or car window mount.