Zhumell's Tachyon 25x100 Astronomical binocular is an industrial-strength, field-worthy instrument for astronomy. With 25X magnification, 100mm objective lenses and built-in tripod adapter, it offers plenty of power for observing craters on the moon and for picking out features on the planets. It'll even afford good views of interstellar objects. Plus, now the Zhumell 25x100 Tachyon binoculars take standard, 1.25-inch astronomical filters to enhance your views of the Moon, planets nebulae and other celestial bodies. The Zhumell Tachyon 25x100 is truly a stellar choice in astronomical binoculars! Other high-performance features include: Fully multi-coated lenses; BaK4 prisms for excellent light transmission; Individual focus for precise adjustment; Rugged metal construction; Waterproof and nitrogen-purged. Ruggedly constructed and waterproof, the Tachyon will take just about anything Nature can throw at it. And its locking, aluminum case will keep it secure on the road. It's even covered by Zhumell's 25-year, no-fault warranty - something everyone can be happy with.