Experience exceptional resolution, outstanding color fidelity, and edge-to-edge sharpness with the Vortex 8x42 Crossfire HD Roof Prism Binoculars. These binoculars feature an HD Optical System optimized with select glass elements for superior light transmission. The fully multi-coated elements increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces. Their compact Roof Prism design ensures greater durability. Constructed with rubber armor for a secure, non-slip grip and durable external protection, these binoculars are O-ring sealed to prevent moisture, dust, and debris penetration, ensuring reliable performance in all environments. Argon gas purging prevents internal fogging over a wide range of temperatures, and their shockproof, rugged construction withstands recoil and impact. Enjoy comfortable viewing with adjustable twist-up eyecups, suitable for users with or without eyeglasses. Easily adjust focus with the center focus wheel, and compensate for differences in eye strength using the diopter on the right eyepiece. These binoculars can be mounted on a tripod or car window mount using a tripod adapter. The included GlassPak Binocular Harness stores and protects your binoculars while keeping them close at hand for quick deployment, with tethers for added security and fully adjustable straps for a comfortable fit. A Vortex cap is also included, featuring an adjustable hook-and-loop back closure, embroidery, and cotton construction, suitable for hand washing.