Fujinon Polaris 7x50FMTR-SX2 Binoculars for Marine, Birding & Astronomy

The FUJINON POLARIS 7x50FMTR-SX2 binoculars are built for demanding viewing on the water, in the field, and under the night sky. A traditional Porro prism design delivers a rich sense of depth, while a field-flattener lens system helps keep the view crisp across the frame—ideal when scanning horizons, tracking birds in motion, or enjoying wide-field astronomy.

Designed for real-world conditions, these 7x50 binoculars combine a bright 7.1mm exit pupil and long 23mm eye relief for comfortable, low-light viewing—especially helpful at dawn/dusk, in fog, or on rough/rolling seas. Anti-reflection EBC fully multicoated optics are engineered to boost light transmission up to 95% for high-contrast images with accurate color rendition, supporting confident identification and more immersive stargazing.

For marine use and travel, the Polaris series prioritizes durability: a milspec impact-resistant chassis, slip-resistant rubber armor, and nitrogen-filled, O-ring-sealed construction help protect performance in wet, cold, or rapidly changing environments. The binoculars are also waterproof and submersible to 6.6 feet for up to 5 minutes, helping safeguard your optics when conditions turn unpredictable.

Key Features of the FUJINON Polaris 7x50FMTR-SX2

• Traditional Porro Prisms: Provides a natural depth-of-field presentation for easier subject separation and positional awareness.
• Field-Flattener Lens System: Helps reduce edge distortion for a cleaner, more immersive wide-view experience.
• EBC Fully Multicoated Optics: Anti-reflection coatings boost light transmission up to 95% for bright, high-contrast viewing with accurate color.
• Low-Light Friendly 7x50 Design: 7x magnification and 50mm objectives produce a wide 7.1mm exit pupil for bright viewing in darkness or heavy haze.
• Long 23mm Eye Relief: Comfortable viewing with reduced eyestrain; helps keep the optic safely away from the face on rough seas and supports eyeglass use.
• Individual Focus Eyepieces: Fine-tune each ocular for precise sharpness and stable focus once set.
• Waterproof, Fogproof & Nitrogen Filled: O-ring seals and nitrogen filling resist internal fogging during rapid temperature changes.
• Submersible Protection: Rated submersible to 6.6 feet for 5 minutes for added confidence near water.
• Rugged, Slip-Resistant Build: Rubber armor improves grip in wet/cold conditions; milspec impact-resistant chassis supports demanding use.
• Light-Blocking Eyecups: Fold-down rubber eyecups contour to the face and help reduce stray peripheral light.

Technical Specifications

• Magnification: 7x
• Objective Lens Diameter: 50mm
• Field of View: 395 ft @ 1000 yd
• Eye Relief: 23mm
• Exit Pupil: 7.1mm
• Interpupillary Adjustment Range: 56–74mm
• Optical Design: Porro prisms with field-flattener lens system
• Optical Coatings: Anti-reflection EBC fully multicoated
• Light Transmission: Up to 95%
• Fogproofing: Nitrogen filled
• Waterproof Rating: Submersible to 6.6 ft for 5 minutes
• Operating Temperature: -4 to 122°F

What's Included

• FUJINON POLARIS 7x50FMTR-SX2 Binoculars
• Ocular rainguard
• Objective lens caps (tethered)
• Ocular & objective lens caps
• Carrying case