The porro prism Navigator Pro Series is the choice for recreational boaters, weekend anglers and hobby sailors. It offers exceptional performance for the price with many of the features found on premium, world-famous Steiner marine binoculars. Although not built to military specification, they will provide a lifetime of use for most water enthusiasts. Featuring a compact frame and High Contrast lens coatings for clear images in an easy-to-handle size. Mfg: Steiner Optics