Amongst the world's great binoculars for boating or astronomy applications, the military-specification Fujinon 7X50 MTR-SX Poseidon Binocular (BP229A-2 501) transmits 95% of the light reaching the binocular, and has Fujinon's EBC multicoatings upon every optical surface.  It is also equipped with eyepieces that accept optional polarizer, nebula, haze, and ND (neutral density) filters as your observing needs would require.  The 100% fogproof and waterproof 7x50 Poseidon withstands drastic temperature and humidity changes with ease, has abundant eye relief for use with sunglasses in bright conditions, and is one of the brightest, highest-resolution 7x50 boating binoculars money can buy.

• A Fujinon military-specified 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, protective rubber armor upon an all-metal housing

• Accepts optional eyepiece filters

• Excellent for both boating and astronomy applications

• Peel-down style rubber eyecups

• Long 12mm eye relief