10x magnification & 28mm objective lenses, these Diamondback HD binos are optimized with select glass elements to deliver exceptional resolution, cut chromatic aberration and provide outstanding color fidelity, sharpness and light transmission. Fully multi-coated lenses increase light transmission with anti-reflective coatings on all air-to-glass surfaces. Dielectric coating provides bright, clear, color-accurate images. Armortek coating protects exterior lenses from scratches, oil and dirt. 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 (located on right eyepiece) adjusts for differences in a user's eyes. Rubber armor provides a secure, non-slip grip, and durable external protection. Binoculars are tripod adaptable allowing use on a tripod or car window mount. Argon purging and o-ring seals provide water and fogproof performance in all environments. Rugged construction withstands recoil and impact. Does NOT include harness.