YFFSUN 20x50 Binoculars Portable Water Resistant Telescope Super High-powered Surveillance Binoculars (Black) 1.20*50 binocular high definition telescope, 20x power zoom and 168ft/1000yds large field of view, suitable for hiking, hunting, climbing, birdwatching, ball games, wildlife watching and scenery. 2.BAK4 prism is made of high refractive index optical glass lens. With special coating treatment, it can provide excellent light source transmission even at the periphery of the scene. It will make your vision brighter and clearer, so that the observation effect will be improve. 3.Durable frame and rubber armor, its tight protection, so that it can withstand the harshest weather conditions, with superior waterproof effect and shock absorption effect. It is a traveler essential product. 4. It is a good gift for family and friends on holidays due to its light weight, small size,convenience for adults and children. 5. This is an essential home travel product for adults and children. Scope: Watching opera, sports, horse racing, bird watching, etc. It can also be used for sightseeing, camping, hiking, shooting, fishing or other outdoor sports.