Nikon Monarch 5 20x56

• 20x magnification with 56 mm objectives: This configuration brings distant subjects noticeably closer while the large front lenses help maintain image brightness, making it well suited to long-range observation from fixed positions.
• Roof prism design with ED glass: The compact roof-prism layout is easier to carry than a comparable Porro design, while extra-low dispersion glass helps reduce color fringing for a cleaner, more precise view of fine detail.
• Dielectric, phase-corrected prism system: Nikon’s prism coatings support better contrast and more faithful image definition, which matters when picking out small features against complex backgrounds.
• 16.40 mm eye relief: The generous eye relief makes the binocular more comfortable over longer sessions and helps eyeglass wearers see more of the full field without constant repositioning.
• Waterproof and nitrogen-filled construction: The sealed, fogproof housing is better suited to damp weather, temperature changes, and outdoor transport where internal fogging would otherwise interrupt use.

About the Nikon Monarch 5 Series

The Nikon Monarch 5 series sits in Nikon’s long-running MONARCH family as a versatile line of roof-prism binoculars built for users who want a practical balance of portability, optical refinement, and field durability. Nikon introduced the series on March 25, 2013, and later expanded it with the 56 mm models in July 2013 to cover applications that benefit from more reach and larger objective lenses.

Across the range, the series uses a fibreglass-reinforced polycarbonate body with rubber armouring, giving the binoculars a lighter, more impact-tolerant structure than metal-heavy designs while keeping a secure grip in wet or cold conditions. Nikon also built the series around ED glass, dielectric high-reflective multilayer prism coatings, multilayer-coated lenses and prisms, and phase-correction-coated roof prisms. In practice, that combination is aimed at reducing chromatic aberration, preserving contrast, and keeping image quality consistent across demanding outdoor use. Nikon positions the 56 mm MONARCH 5 models for birdwatching, nature observation, outdoor activities, stargazing, spectator sports, and marine use, making them the higher-magnification, larger-objective end of the series.

About the Nikon Monarch 5 20x56

The Nikon Monarch 5 20x56 is the longest-reaching standard binocular in this MONARCH 5 56 mm group, built for situations where magnification matters more than compact size. With 20x magnification and a 56.00 mm objective lens, it is well suited to long-distance glassing, hillside observation, shoreline scanning, and astronomy use where the subject is too far away for lower-power binoculars to show enough detail. The narrower 58.10 m/1000m field of view reflects that long-range emphasis, helping concentrate the view on distant targets rather than broad-area scanning.

Its optical design combines Roof - Schmidt/Pechan prisms, fully multicoated optics, and the MONARCH 5 series’ ED-glass approach to deliver a cleaner image with better control of color fringing than basic high-magnification binoculars. The 16.40 mm eye relief is useful for extended observation and helps maintain a more comfortable viewing position, especially for users wearing glasses. A 2.80 mm exit pupil is typical for a 20x binocular of this size: it favors daylight, bright overcast, and supported low-light observation where reach is the priority.

Mechanically, the binocular uses a central focusing system for straightforward adjustment and a right-eyepiece diopter to fine-tune the view between eyes. The nitrogen-filled, waterproof and fogproof housing is designed for outdoor use in changing weather, while the 1235.00 g weight and supplied tripod adaptor support more stable viewing when high magnification makes hand shake more noticeable.

About Nikon

Nikon was established in Tokyo on July 25, 1917 as Nippon Kogaku K.K., and the company later adopted the name Nikon Corporation on April 1, 1988. Headquartered in Tokyo, Japan, Nikon works across imaging products, precision equipment, healthcare, industry, components, and digital manufacturing. In sport optics, Nikon is known for binoculars, fieldscopes, and laser rangefinders, with established families such as MONARCH, PROSTAFF, EDG, ACULON, and High Grade.

That broad optical background is relevant here because Nikon has long combined consumer imaging experience with precision optical engineering. In binoculars, the company is particularly associated with multilayer-coated lenses used to improve light transmission and image clarity in field conditions. Nikon’s sport optics history also reaches back to early compact binocular development, including the introduction of its MIKRON compact binoculars in 1921, showing how long the company has been active in this category.

Main Features

• Product type: Binoculars
• Series: Nikon Monarch 5
• Magnification: 20.00 x
• Objective lens diameter: 56.00 mm
• Prism type: Roof - Schmidt/Pechan
• Lens coating: Fully Multicoated
• Field of view at 1000 m: 58.10 m/1000m
• Field of view (degrees): 3.32 °
• Apparent field of view: 59.90 °
• Exit pupil: 2.80 mm
• Eye relief: 16.40 mm
• Close focus: 5.00 m
• Focusing system: Central
• Diopter adjustment: Right eye-piece
• Interpupillary distance: 56.00 mm - 72.00 mm
• Waterproof: Yes
• Fogproof: Yes
• Nitrogen filled: Yes
• Length: 199.00 mm
• Width: 146.00 mm
• Height: 67.00 mm
• Weight: 1235.00 g
• Body type: Single hinge
• Color: Black
• Made in: China

Warranty

5 years. Nikon states a 5-year warranty for this binocular, providing defined long-term coverage rather than an open-ended warranty description.

In the Box

• Tripod adaptor
• Flip-down objective lens cap