







Nikon 12x42 Monarch M5 Binoculars
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- Ideal for Glassing Across Vast Distances
- Extra-Low Dispersion Glass Elements
- Lead- and Arsenic-Free Eco-Glass
- Phase-Corrected Dielectric-Coated Prisms
- Anti-Reflection Fully Multicoated Optics
- Nitrogen Filled, Water and Fogproof
- Closed-Bridge Configuration
- Large Center Focusing Knob
- Tripod Mountable with Optional Adapter
- Twist-Up Click-Stop Eyecups
What's Included

The Nikon Monarch M5 Binoculars are an advanced iteration of the Monarch 5 series, designed specifically for expansive landscapes. They deliver a broader field of view for a more engaging observational experience without sacrificing the ergonomic comfort and reliable performance characteristic of the Monarch range. Equipped with fully multicoated, anti-reflective optics, extra-low dispersion glass, and roof prisms featuring highly reflective dielectric coatings and phase correction, these binoculars produce sharp, vivid images with true-to-life colors and minimal chromatic aberration.
Optical Performance
The Nikon 12x42 Monarch M5 binoculars deliver powerful magnification for precise viewing of distant subjects across expansive, flat terrains like the American West’s prairies. Larger objective lenses enhance light gathering without increasing weight or size, while the roof prism design keeps the binoculars compact and slim. Extra-low dispersion glass minimizes chromatic and spherical aberrations, enhancing contrast, color accuracy, and sharpness throughout the entire field of view. Phase-correcting coatings reduce internal interference, boosting light transmission, contrast, and resolution. Fully multicoated anti-reflective optics optimize light passage for true-to-life colors and clarity. Highly reflective multilayer dielectric prism coatings increase internal reflection beyond 99%, preserving image brightness and enhancing contrast. An expanded field of view offers a more immersive observation experience compared to earlier models.
Use and Handling
The Nikon 12x42 Monarch M5 Binoculars feature a high-eyepoint design that ensures a clear view even when wearing glasses by providing ample space between the eyecups and brow. Its closed-bridge structure offers a stable foundation for the internal focusing system, while the large slip center focus wheel allows for precise adjustments, including when wearing gloves. The right-eye dioptric adjustment accommodates individual vision differences, and a wide interpupillary distance range of 56-72mm suits various users. Twist-up, click-stop rubber eyecups adapt for use with or without eyewear. Additionally, these binoculars can be tripod-mounted with an optional adapter for hands-free operation, and their comfortable exit pupil aligns with most pupils in low-light conditions to maintain the full field of view.
Construction Details
The Nikon 12x42 Monarch M5 Binoculars incorporate environmentally responsible Eco-Glass, manufactured without lead or arsenic. Their textured rubber armor ensures a secure, slip-resistant grip, even in cold or wet conditions. Nitrogen purging and O-ring seals make the binoculars fully waterproof and protect against internal fogging during rapid temperature changes and harsh environments. The matte black finish keeps the binoculars discreet across various settings. A one-piece tethered ocular rainguard shields the eyecups from rain and splashes when worn around the neck, while tethered fold-down objective lens caps safeguard the lenses without the risk of loss during use.
| Product Brand | Nikon |
|---|---|
| SKU | BINNIMM512X42 |
| Prism Type | Roof |
| Magnification | 12x |
| Objective Diameter | 42mm |
| Image Stabilization | None |
| Angle of View | 5.1° (Actual) |
| Field of View | 88.6 m @ 1000 m |
| Minimum Focus Distance | 2.5m |
| Exit Pupil Diameter | 3.5 mm |
| Eye Relief | 15.1 mm |
| Interpupillary Adjustment | 56 to 72 mm |
| Environmentally Sealed | Yes (Nitrogen Filled, Waterproof) |
| Dimensions | 14.5 x 13 x 5.3 cm |
| Weight | 641g |
