The Monarch ATB 42mm binocular with Dielectric High-Reflective Multilayer Prism Coating features brighter, sharper colors and drastically improved low-light performance. Nikon guarantees this durable, waterproof and fog-proof binocular to be 100% waterproof and fog-proof, with a new body style that provides unparalleled strength and ruggedness in a comfortable, all-day carry package. With rugged rubber armor for added durability and a firm grip even in harsh conditions, the Monarch ATB 42mm is backed by Nikon's 25 Year Limited Warranty and No-Fault Repair/Replacement Policy.

Designed for optimal performance, the Monarch ATB 42mm binocular boasts bright, multicoated optics and long eye relief to accommodate eyeglass wearers. Its BaK-4 high index prisms and Turn & Slide rubber eyecups with detents further enhance visual quality and ergonomics. Additionally, the binocular is tripod adaptable for stable, steady viewing.

Available in 8x42, 10x42 and 12x42 configurations, the Monarch ATB 42mm binocular can also be purchased in Team REALTREE models featuring the REALTREE APG HD camouflage pattern.

Nikon's commitment to quality and customer satisfaction is evident in their industry-leading warranty and repair policy. If a Nikon binocular, Spotting Scope or Fieldscope requires service or repair not covered by the 25 Year Limited Warranty, Nikon will repair or replace it for just $10, plus return shipping and handling, even if the issue was the customer's fault. This policy excludes StabilEyes, Laser Rangefinders and Spotting Scope/Fieldscope eyepieces.

Providing further insight, the FAQ section addresses key optical performance metrics:

Real field of view refers to the angle of the visible field seen without moving the binoculars, measured from the central point of the objective lens. A wider real field of view is advantageous for locating fast-moving subjects or observing smaller celestial objects.

Apparent field of view is the angle of the magnified field seen through the binoculars. A wider apparent field of view allows for a broader view even at high magnifications. Nikon calculates apparent field of view using the ISO 14132-1:2002 standard formula.

Relative brightness is obtained by squaring the exit pupil diameter. Brighter images are achieved with a larger objective lens diameter, but brightness can also vary based on optical design and lens/prism coatings.

Prisms come in two main types - Porro and roof. Porro prisms typically offer superior optics, especially in mid-range binoculars, while roof prisms provide a more compact form factor. BAK-4 prisms are considered the optimal choice for clear, high-contrast images.

Multilayer coatings on prisms, as well as phase-correction coatings on roof prisms, further enhance light transmission and image resolution. The twilight factor, calculated from magnification and objective lens diameter, indicates a binocular's low-light performance.

In summary, the Monarch ATB 42mm binocular from Nikon delivers exceptional optical quality, rugged durability and user-friendly features in a versatile, high-performance package.

product information:

Attribute

Value

product_dimensions

9.6 x 8.4 x 4.2 inches

item_weight

2.29 pounds

item_model_number

7247

batteries

1 A batteries required.

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