The Bo Endurance ED Marine 7x50 Blue binoculars from Hawke are precision marine optics specifically designed for boating and maritime applications. With 7x magnification and 50 mm objective lenses, these binoculars offer excellent light transmission and clarity in marine environments. The advanced optical system incorporates Extra-Low Dispersion glass for superior color fidelity and minimal chromatic aberration, while phase-corrected BAK-4 roof prisms ensure high-resolution imaging with accurate color reproduction. With a height of approximately 175 mm and a width between 122 mm and 135 mm, these binoculars provide a compact yet robust design suitable for marine use. The extendable eyepieces with locking positions accommodate both eyeglass wearers and non-wearers, offering comfortable viewing with a 20 mm eye relief. With a close focus limit of 2.5 meters and an apparent field of view of 367 feet at 1000 yards, these binoculars deliver comprehensive situational awareness. The fully multi-coated lenses maximize light transmission while reducing glare and reflections, and the silver mirror coating enhances brightness in low-light conditions. Additional features include a diopter adjustment system for the right eye, a tripod mounting option with a standard 0.25 inch 20 UNC thread, and included lens caps. The floating neck strap ensures secure handling in marine environments, making these binoculars reliable companions for navigation, wildlife observation, and general maritime use. Focusing on durability, the Endurance ED Marine series represents the evolution of proven Hawke optical technology, now specifically optimized for the demanding conditions of marine applications.