Nikon Prostaff P7 8x30 BinocularThe Nikon Prostaff P7 8x30 Binoculars are an improved version of the Prostaff 7S 8x30. In the P7, Nikon has added water and oil repellent coatings on the outer lenses which makes them easier to clean, a locking diopter control that prevents your diopter setting from drifting, and they've added multi layer dielectric coatings to the prisms, which increases light transmission for brighter images. As with all Prostaff P7 models, the 8x30s are waterproof