20x50 Binoculars for Adults - HD Professional Binoculars for Bird Watching Travel Stargazing Concerts Sports-BAK4 Prism FMC Lens-with Phone Adapter Strap Carrying Bag

20x50 Binoculars for Adults With Phone Adapter - High Power Professional Binoculars with BAK4 Prism for Bird Watching Stargazing Hunting Sports Smartphone Adapter Adjustable Phone Adapter Capture, share and revisit the exciting moment become easily Advanced FMC BAK 4 Roof Prisms and Fully Multi Coated Optics offer crisp clear images with improved light transmission for bright, sharp images Optimum Clarity Built with premium ED Glass for a sharper, clearer and more brilliant field of view Tripod compatible Easily attach these binoculars to tripods quickly There is a 1/4-20 threads screw