Pentax 7 X 50 Marine Binoculars W/ Built In Compas Available in 7X50 which gives the ideal magnification and objective lens diameter for viewing on or around water Built-in Compass, with an easy to read compass scale, on liquid bearing for quick dampening Ranging reticle to determine distance from object or object size from a distance LED Compass Illuminator for low-light or night use Nitrogen-filled, waterproof construction allow these binoculars to be used in the most extreme weather conditions