Top quality waterproof , nitrogen filled observation binoculars, with individual eyepiece (IF) focusing, designed for medium-to-long-range terrestrial and astronomical observations. Robust design incorporating an all-metal body construction. Features BAK-4 prisms and a fully broadband multi-coated optical system. The high-resolution optical system features high-transmission lens and prism coatings allowing a massive 92% light transmission, producing a flat field and bright distortion-free images. Exotic eyepiece design featuring oversized elements and long eye-relief and fold-down rubber eyecups for spectacle-wearers. Features integral tripod mounting bush and threaded eyepiece units to accept standard 1.25” astronomical light-filters. Finished in stylish Black Rubber and supplied in foam-lined Aluminium storage/carrying case.