The Minox BN 7×50 Black Binoculars are porro prism models that are perfect for aquatic environments, fully waterproof and equipped with a floatable design that keeps them on the surface of the water if they fall overboard! To minimize drops, the body is outfitted with non-slip rubber that helps you securely grip the binocular. This grip combined with a very long 24 mm eye relief provides a comfortable view, especially helpful on a swaying boat. The focusing system keeps everything from 12 meters to infinity in focus by relying on your eyes’ natural ability to do the job, eliminating the need for a focus wheel.
“You can also check an interesting post on binoculars at Binoculars Guru.” click the link