Check the listing for details. Vortex Optics Viper HD 10x42 Binocular w/ Vortex Harness Case and Free VX Hat. Condition: New. Listed at 499.00 USD. Viper HD binoculars are an optical masterpiece, giving hunters, shooters and 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. Magnification 10xObjective Lens Diameter 42 mmEye Relief 17 mmExit Pupil 4.2 mmLinear Field of View 341 feet/1000 yardsAngular Field of View 6.5 degreesClose Focus 6.5 feetInterpupillary Distance 56-75 mmHeight 5.6 inchesWidth 4.9 inchesWeight 24.9 oz