Vixen 30 X 80 Giant Binocular Specifications... * Model: 1458 * Prism: BaK-4 Porro * Objective Diameter: 80mm * Magnification: 30X * Exit Pupil: 2.7mm * Relative Brightness: 7.3 * Eye Relief: 18mm * Field of View in Degrees: 2.3 * Field of View @ 1000 Meters: 40 * Field of View @ 1000 Yards: 120 * Near Focus: 15.3 yards * Dimensions in Inches: 12.8 x 8.7 x 3.9 * Dimensions in Centimeters: 32.6 x 22 x 9.9 * Weight in Grams: 2390 * Weight in Ounces: 84.3 * Tripod Adapter: Bottom, 1/4-20