







Nikon 8x42 Monarch M5 Binoculars
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- 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
- Long Eye Relief & Comfortable Exit Pupil
- Large Center Focusing Knob
- Tripod Mountable with Optional Adapter
- Twist-Up Click-Stop Eyecups
What's Included

Building on the established Monarch 5 framework, Nikon’s 8x42 Monarch M5 Binoculars offer an expanded field of view, enhancing observational immersion without compromising the comfort and reliability that define the Monarch series. Featuring extra-low dispersion glass, advanced anti-reflective multicoatings, and dielectric-coated, phase-corrected roof prisms, these binoculars produce bright, high-contrast images with accurate color reproduction and reduced chromatic aberration.
Premium Optical Performance
Offering 8x magnification, the Monarch M5 binoculars deliver clear, close-up views while remaining stable in hand. Their large 42mm objective lenses ensure bright imagery in dim lighting situations such as dawn or dusk. Utilizing extra-low dispersion glass reduces chromatic and spherical distortions, and phase-correcting prism coatings enhance light transmission by minimizing internal reflections, resulting in superior contrast and sharpness.
Use and Handling
The roof prism architecture combined with a closed-bridge design ensures a compact and ergonomic profile. Its high-eyepoint configuration offers generous clearance between the eyecups and brow, delivering an unobstructed view even for eyeglass wearers. The twist-up, click-stop rubber eyecups enhance comfort and usability with or without glasses. A large, textured center focus wheel provides smooth, precise focusing, manageable even when wearing gloves. Adjustable diopter and a wide interpupillary distance accommodate diverse users, while an optional adapter allows for secure tripod mounting.
Construction Details
Constructed with environmentally conscious Eco-Glass free of lead and arsenic, these binoculars feature textured rubber armor for a secure, slip-resistant grip in cold or wet conditions. They are nitrogen-filled and O-ring sealed to ensure waterproof performance and prevent internal fogging during rapid temperature changes. Rated IPX7, they can be submerged up to 1 meter for 30 minutes. Their black finish provides discreet use across environments. Protective features include a one-piece tethered ocular rainguard to shield eyecups from moisture and tethered fold-down objective lens caps to prevent loss during use.
| Product Brand | Nikon |
|---|---|
| SKU | BINNIMM58X42 |
| Prism Type | Roof |
| Magnification | 8x |
| Objective Diameter | 42mm |
| Image Stabilization | None |
| Angle of View | 6.4° (Actual) |
| Field of View | 111.2 m @ 1000 m |
| Minimum Focus Distance | 2.5m |
| Exit Pupil Diameter | 5.25 mm |
| Eye Relief | 19.5 mm |
| Interpupillary Adjustment | 56 to 72 mm |
| Environmentally Sealed | Yes (Nitrogen Filled, Waterproof) |
| Dimensions | 14.5 x 13 x 5.3 cm |
| Weight | 629g |
