The Barska Deep Sea Waterproof Range Finding Compass Reticle Binoculars by Barska is designed specifically for the nautical and boating enthusiast. The 7x50 is a popular, easily manageable binocular size that permits a steady image even under agitated ocean conditions. These binoculars provide clear observation in any marine ecology from sunrise to sundown with the push activated LED which lights up the compass. The Deep Sea binocular features a rugged heavy-duty and shockproof rubber-armor covering that allows a sure and secure grip in any sea condition. FeaturesBAK-4 Porro PrismsFully Coated OpticsInternal Rangefinder & Compass Reticle (Left Eye)Push Button LED Light for CompassCenter Focus