Vortex Viper HD Full-Size Binoculars - 12x50 - 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. HD Lens Elements Premium extra-low dispersion glass delivers the ultimate in resolution and color fidelity, resulting in high-definition images. XR 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. Roof 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 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. Adjustable 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.