Vanguard Mariner 7x50mm Binoculars were born for the open ocean, with rugged construction, high light transmission, and other nautically-themed features that will make maritime observation an easy affair. These powerful Vanguard binoculars boast a 7x magnification and large 50mm objective lenses that absorb a lot of light, creating bright images even when the sun is setting over the horizon. A good pair of ocean-faring binoculars would be nothing if they couldn't get wet, which is why the Vanguard Mariner Binocular is 100% waterproof up to 16 feet and completely fog-proof, so you don't have to worry about the water that's all around you getting inside your binoculars. Vanguard has designed the Mariner with BaK4 porro prisms and a focus range of just three meters to infinity, so you can observe objects just as easily on the horizon as on the other end of your vessel. With a five-year warranty, non-slip rubber armor, and a floating neck strap, you'll likely have this well-made binocular in your captain's cabin for a long time. For sailing the high seas or your local lake, there's no better pair of binoculars than the Vanguard Mariner 7x50 Waterproof Binoculars.