Designed for wet-weather hunts, these waterproof Bushnell® H2O Porro-Prism 10x42 Binoculars feature shock-resistant, rubber armor for enhanced grip. O-ring sealed and nitrogen purged for fogproof and waterproof performance. Multicoated lenses maximize light transmission in low-light conditions. Long eye relief, twist-up eyecups and large center focus. BaK-4 prism glass for optimum brightness and clarity. Manufacturer's limited lifetime warranty.