Binoculars for Adults 20x50 Roof Prism Binoculars with Smartphone Adapter Carry Case BAK4 Prism FMC Lens with Low Light Vision HD Powerful Binoculars for Bird Watching Hunting Wildlife 20X50

Powerful Binoculars Powerful 20x magnification, 50 mm objective diameter, an optimal wide field of view at 367FT/1000YDS. Optimum Clarity Advanced Fully Multi coated lenses delivers the highest level of light transmission for better brightness and true color,combine with high quality BK-4 prism multi-coated optics for bright, clear,crisp viewing ED Glass Built with premium ED (Extra-Low Dispersion) Glass for a sharper, clearer and more brilliant field of view, The ultra-low dispersion glass allows the visible colors of the spectrum to focus at virtually the same point. helps improve color resolution and contrast,eliminates chromatic aberration and color-fringing and brings out detail, Central Focus Wheel Rotate the central focus wheel smoothly for target focus adjustment Rotatable Eyecup The rotatable rubber eyecups allow users to adjust the eye relief for a custom fit, providing a full field of view and maximum comfort during extended periods of use. Large Eyepiece Large 28mm eyepiece allow better light transmission for rich details of small objectives All-Weather Reliability Argon purging and O-ring seals provide water and Fog proof performance in all environments. Rugged construction withstands recoil and impact. Includes glass Pak harness. Specification: Magnification: 20x Objective Diameter: 50mm Eyepiece Diameter: 28mm Eye Relief: 12.4mm View Angle: 7.2° Field of View: 367 FT / 1000YDS Prism: Roof prism / BAK4 Eye Cups : Twist up Waterproof: YES Product dimension: 7.48 x 2.68 x 7.09 inches Product weight: 2.09 pounds / 945g