10x50 Pankoo HD BAK4 Binoculars for Adults High Powerful Binoculars for Bird Watching,Traveling,Sightseeing, Hunting. [Quality optics with stunning HD clarity]Because these HD binoculars are adopt the Superior Bak4 Prism which can guarantee a Clearer and Brighter filed of view than the 8X,7X,6X,10x42,7x50 telescope or binoculars. more clear, even low light condition. [Large Field of View ]:168ft/1000 yds , good for fast moving subject.Perfect for bird watching, sightseeing, hunting, wildlife watching, sports events.sightseeing,climbing . [100% SATISFACTION GUARENTEE ] :Due to the data of binoculars is an estimated value, we cant provide the exact data. So if you have any problems in using our binoculars, please dont hesitated to email us, we will offer your the LIFETIME SERVICE for refund or exchange. We promise we will give you the most satisfied service for you. [The best choice as a gift]:It is a great gift for fathers and other relatives.Come with Hanging Strap,Backpack,Lens Cap and Eyepiece Cap,good protection of your telescope,easy to carry anywhere. [Easy to use ]:Fold the framework to make sure your eyes feel comfortable. Adjust the central focus wheel until see image clearly. Adjust the right eyepiece until get a single and clearly field.