20x50 Binoculars for Adults High Powered, Military Compact HD Professional/Daily Waterproof Binoculars Telescope for Bird Watching Travel Hunting Football Games Stargazing with Carrying Case and Strap[Wide Field of View] 20x magnification, 23mm eye lens diameter and 50mm objective diameter; 56m field of view at 1000m; When you use this binoculars, the vision is broad and it is very clear for the gain of binoculars. [Professional Powerful Binoculars] Multilayer coated aspherical lenses elements provide superior light transmission and minimal distortion, better image brightness, contrast and quality. The Bak 4 prism has a perfectly round exit pupil.