Zhumell Tachyon 25x100 Binoculars 25x Magnification ideal for astronomical use. Multi-coated large objective lenses and BaK4 prisms for crisp, high-contrast images. Integrated center column with adjustable tripod mount to fit any standard photographic tripod. Individual diopter focusing for precise focusing. Locking, hard-sided aluminum case to protect your binoculars.