The 15x50 Viper HD Binocular from Vortex is a versatile rugged binocular delivering accurate lifelike color and high-resolution under any condition. The combination of high density (HD) extra-low dispersion lens elements and XR anti-reflective optical coatings significantly enhances the viewers' ability to locate and identify subjects, targets, and game. The dielectric-coated roof prisms are fully phase-corrected to ensure maximum light transmission, clarity, and contrast. The entire system is purged and sealed to withstand snow, rain, and dust. A durable and tactile rubberized coating offers a positive grip, and light shock protection.