PROFESSIONAL BINOCULARS20X power magnification and 50mm large objective lens,designed to enable you to observe target from 1000 yards away with more true-to-life details. Perfect for outdoor activities such as climbing, hiking, driving, watching wildlife and scenery. This 20x50 powerful binoculars for adults also can be used for watching large stage play, vocal concert, football game, etc.^ HD VISIONBAK-4 Prism and Multi-coated optics provide clear images with improved light transmission and Min distortion ,and enhances image brightness, allows for brighter viewing. llight function of professional 20x50 binoculars can deliver clear vision in gloaming, but not in not completely darkness^ BINOCULARS FOR ADULTS KIDSOur professional HD binoculars for birds watching with adjustable eye widths fit most adults and children. Adjustable eye-cups twists up and down for perfect viewing with or without eyeglasses. The smooth central focus knob makes these professional roof prism 20x50 bnoculars easy to focus to obtain a clear image. Its very simple to operate even by kids^ 100% WATERPROOFThis 20x50 roof prism binocular for adults is made of non-slip rubber armor and leather,allows it waterproof, shock-resistance, durable and provides a firm grip. Completely sealed and nitrogen purged body,100% waterproof for fog free performance.our lightweight binoculars come with a carrying case for easy transportation and storage,which can also protect the birding binocular from collisions