The Barska 25×100 Waterproof Cosmos Binocular boasts outstanding performance especially for astronomical viewing and long distance terrestrial observation in low-light conditions. With multi-coated optics and BAK-4 prism glass gives more light transmission and crisp clear images. The Porro prism system offers greater depth perception and a wider field of view. The individual focusing system gives customization of fixed distance viewing. Has complete water proof protection to avoid moisture damage. The heavy-duty reinforced construction makes is durable and strong. Has a braced-in tripod-mounting post to attach the binoculars to a tripod. Tripod sold separately. Backed by Limited Lifetime Warranty. Includes hard case, lens covers and lens cloth.