Orion 09466 Mini Giant 15 x 63 Astronomy Binoculars (Black) Big 63mm diameter objective binoculars grab a ton of light and excel for both astronomical and daytime viewing Mini Giant binocular lenses and BAK-4 prisms are fully multi-coated for exceptional light transmission and bright images Binocular barrels are internally glare-threaded to eliminate ghosting and ensure rich contrast For steady images and extended gazes, you'll want to mount these high-power binoculars on a tripod Includes hard case, deluxe wide neck strap and lens caps