Vortex 10x42 Viper HD Binocular

Its high density, extra-low dispersion glass elements are treated with Vortex proprietary XR anti-reflective optical coatings for optimal light transmission. Phase-correcting, dielectic coatings on the roof-style prisms further enhance the quality of the light path. The entire system is argon-purged and O-ring sealed for waterproof, fogproof, and dustproof performance, and the lenses bear ArmorTek coating for protection from scratching, oil, and dirt. A durable and tactile rubberized coating offers a positive grip and light shock protection. Optical Performance

·Apparent angle of view: 61° 

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·Phase-corrected roof prisms: dielectric coated for rendering high resolution and excellent contrast

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·HD lens elements: high density extra-low dispersion glass optimizes light transmission and color fidelity

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·XR lens coating: anti-reflective multi-coating on all air-to-glass surfaces enhances contrast and reduces glare

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·16.5mm eye relief

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·4.2mm exit pupil

·Use and Handling

·Closed bridge configuration

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·Center focus knob has a tight, smooth action

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·Rubber armor provides a secure non-slip grip

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·Locking right eye diopter for exacting focus correction

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·Twist-up eyecups with intermediate settings accommodate eyeglass wearers

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·Tripod mountable with an optional adapter

·Construction Details

·Protective rubber covering for enhanced external protection

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·Argon-purged and O-ring sealed for waterproof, fogproof, and dustproof performance

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·ArmorTek coating: scratch-resistant coating protects objectives and oculars from scratches and dirt.

·Prism Type   RoofMagnification   10xObjective Lens Diameter   42 mmAngle of View   6.1° (Actual)Field of View   319' @ 1000 yd / 105.91 m @ 1000 mMinimum Focus Distance   5.1' / 1.55 mExit Pupil Diameter   4.2 mmEye Relief   16.5 mmInterpupillary Adjustment   59 to 75 mm / 2.3 to 3"Focus Type   CenterTripod Mount   Yes (Adapter Optional)Dimensions   5.8 x 5.3" / 147.3 x 134.6 mmWeight   24.6 oz / 697.4 g