Nikon Action Zoom XL 10-22 x 50mm Binocular: Specs: * 10-22x magnification * 50mm objective diameter * Angular field of view real: 3.8 * Angular field of view apparent: 38 * Field of view at 1,000 yards: 198 feet at 10x * Close focus distance: 49 feet * Exit pupil: 5mm at 10x * Relative brightness: 25mm at 10x * Eye relief: 8.6mm at 10x * Size: 7.6"L x7.2"W * Weight:33.5oz Features: * Fingertip zoom control * Bright, multi-coated optics * Ergonomic body design * Diopter control for strain-free viewing * Rubber armor for sure grip * Aspherical eyepiece lens elements * Quick central focusing * BaK4 high-index prisms * The Nikon Action Zoom 10-22x50mm Binoculars are tripod adaptable