Vortex Vulture HD Full-Size Binoculars - 15x56 - The Vulture HD is perfect for wide-open western landscapes where intense scrutiny of game-hiding terrain is a primary hunting tactic. Phase-corrected roof prisms and fully multi-coated lenses with proprietary XR anti-reflective coatings deliver super bright images, edge-to-edge. Long-range tripod glassing is an art, let the Vulture HD be your brush.. 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. 56 mm Lenses Maximize low light performance. 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. Diopter Adjusts for differences in a user's eyes. Located on right eyepiece. Tripod Adaptable Compatible with a tripod adapter, allowing use on a tripod or car window mount.