Vortex Raptor Compact Binoculars - 10x32 - Porro prism performance in a mid-size, wide-angle design, Raptor binoculars offer bright, crisp images with excellent color fidelity, even in low-light conditions. The design accommodates a wide range of interpupillary distances to fit everyone in the family. Fully Multi-Coated: Increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces Porro Prism: Valued for a rich depth of field, wide field of view, 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 prevents internal fogging over a wide range of temperatures. Rubber Armor: Provides a secure, non-slip grip, and durable external protectio 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