Nikon Prostaff P7 10x30 BinocularThe Nikon Prostaff P7 10x30 Binoculars are an updated version of the Prostaff 7S 10x30. Nikon has added hydrophobic (water repellent) coatings on the outer surfaces of the objective and eyepiece 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