20x50 Binoculars for Adults High Power: Professional Waterproof Binoculars with Porro BAK4 Prism Len Multilayer-Coated Lenses for Bird WatchingTravel Hiking Concert and SportsHigh Powered Porro Prism Binoculars: This binoculars designed with 20X powerful magnification and 50mm Objective lens. It provide high definition and non chromatic aberration when you are using it. 168ft 1000yds clear field of view is suitable for bird watching,concert,theater,sport game,climbing,camping,wildlife. Quality Coated Optics: Fully multi coated optics provide a better light transmission and Contras which bring a brighter view and sharp