Amongst the world's greatest binoculars for boating or astronomy applications, the military-specification Fujinon 7x50 FMTR-SX Polaris Binocular transmits an incredible >95% of the light reaching the binocular, and has Fujinon's EBC multicoatings upon every optical surface. It is also equipped (as is any Fujinon Polaris series binocular) with flat-field, distortion-free eyepieces that accept optional filters and are ideal for astronomy applications. The 100% fogproof and waterproof 7x50 Polaris withstands drastic temperature and humidity changes with ease, has abundant eye relief for use with sunglasses in bright conditions, and is simply the brightest, highest-resolution 7x50 boating binocular money can buy. This "FMTR" version of the 7x50 Polaris only differs from the "FMT" Polaris by its rubber armored exterior.
Fujinon's best military-specification 7x50 porro prism binocular with a 7.5° field
Nitrogen-purged waterproof & fogproof lenses
Up to 13 Fujinon EBC multicoatings upon all optical surfaces
56-74mm Interpupillary adjustment range
Thick and protective rubber armor upon an all-metal housing