The Vortex Vanquish 8x26 binocular is a little wonder comes courtesy of forward-thinking engineering and on-the-go tactics. The reverse porro prism design uses high quality glass and fully multi-coated optics to render images crisp and bright with a wide field of view. That makes quick work of scanning any landscape a given with the 8x26 Vanquish binocular. Weighing in at merely 12.7 ounces, and competitively priced, this compact performer delivers in more ways than one. Key Features: Fully Multi-Coated: Multiple anti-reflective coatings on all air-to-glass surfaces increase light transmission. Reverse Porro Prism: Valued for a rich depth of field, compact design, and three-dimensional image. Waterproof: O-ring seals prevent moisture, dust and debris from penetrating the binocular for reliable performance in all environments. Fogproof: Nitrogen gas purging delivers fogproof, waterproof performance. 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. Centre 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.