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// 29.9.2023 GA4 add to cart // 29.9.2023 GA4 add to cart

Kowa BD 12x56 XD Prominar

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Kowa BD 12x56 XD Prominar Details

The 12x56 Kowa Prominar XD binocular is designed for users looking for a long range instrument that is still small and lightweight enough to carry about in the field.
Whilst powerful, the 12x magnification is also not too great so that you are forced to use a tripod. However, these binoculars are tripod adaptable and can thus easily be attached to a tripod should you require a completely steady and shake-free image.
Whilst the high power brings you increased image detail at longer distances, it does restrict the field of view. Although for a 12x binocular these still produce a comparatively wide view, which is of great benefit to users like long range hunters and nature observers making it easier to scan large areas looking for items of interest.
Stargazers will also appreciate the high power and relatively large objective lenses, making this the ideal easy to carry astronomy binocular to take on a camping trip.
Considering their high 12x magnification, the 16mm of eye-relief that you get on this model is really impressive and it beats much of the direct competition. This is especially important for eyeglass wearers who should be able to view the entire field of view whilst wearing their glasses by twisting down the adjustable eye-cups.

About Kowa BD XD PROMINAR Binoculars

BD XD Prominar series of binoculars by Kowa manufacturer offers compact-size, all-rounders and nighttime binoculars for long distance observations. Perfect for huntersbirdwatchers, hikers, travelers, safari etc. Tthe nighttime binoculars with 56mm lens diameter are suitable for astronomy applications. All the models are built out of rugged and durable materials, special Prominar XD lenses and layers of C3 high-quality optical coatings. Wider field of view and stunning close focusing distance that these compact and all-round models provide, are able to satisfy the not only beginners but also the demanding users. Great balance and full protection of these BD series are also very important features.

Basic Features

The compact size model in this BD series is made out of Aluminum body and all-rounders are made out of lightweight Magnesium chassis that makes them less fatiguing. Nighttime models are made out of Polycarbonate body, the lightest material that significantly helps to take the weight off your shoulders. All BD HD Prominar binoculars are enclosed in rubber armour to make construction shock-proof and impervious to water and dust. Completely sealed body is purged with nitrogen gas that prevents the formation of condensation due to temperature changes that especially occur during the sunrise or sunset. These series offer great ergonomics due to their stylish and practical design and perfect weight distribution and balance. All models are equipped with twistable eyecups that offer ideal eye-relief even for those wearing eye glasses. Focusing is adjusted with a very grippy silver central focusing wheel diopter that is integrated onto central wheel (56 mm models) or beside the right eyecup (32 mm and 42 mm models).

Optical Properties

BD series is equipped with special PROMINAR XD lenses that enhance brightness and help with extremely razor sharp images due to extra-low dispersion rate that reduces chromatic aberration. C3 coatings that are applied on the glass help with better light transmission, colorful lifelike images and phase correction which delivers a powerful contrast and resolution for stunning view-through. These binoculars provide wider field of view for quicker tracking. All-round and compact models offer extremely generous close focus distance (1.5m) perfect for macro observations. The objects up close will reveal even the smallest details of the birds, insects, etc.


Kowa BD includes extremely comfortable neckstrap for carrying, objective covers and rainguards for protection of the lenses and case for storage.

Features of Kowa BD XD PROMINAR Binoculars

  • Aluminum Body (32 models)
  • Magnesium Body (42 models)
  • Polycarbonate body (56 models)
  • XD PROMINAR Lenses
  • Fully Multi-coated (C3)
  • Ultra Close Focus (32 and 42 models)
  • Roof Prism
  • Phase Correction
  • Bak4 Prisms
  • Central Focusing
  • Right-eye Diopter
  • Twist-up Eyecups
  • Waterproof
  • Fog-proof (Nitrogen filling)
  • Tripod Adaptable

Accessories of Kowa BD XD PROMINAR Binoculars

  • Neckstrap
  • Case for Storage
  • Objective Lens Covers
  • Rainguards
  • Lens Cleaning Cloth

Available models of Kowa BD Binoculars


Short range, daytime compact binoculars


Long range, daytime compact binoculars


Short range, all-round daytime binoculars


Long range, all-round daytime binoculars


Short range, nighttime binoculars


Long range, nighttime binoculars


Long range, nighttime binoculars

Warranty Terms and Conditions

Kowa gives 10 years of Warranty for BD XD PROMINAR Binoculars. The company repairs or replaces damaged products, without charge. However, it doesn’t include No Fault Policy – doesn’t cover damages due to mishandling, misuse, neglect or accidental damage. Kowa is not responsible for lost packages. You can claim the warranty with warranty card given by Kowa. Wearing parts such as carrying straps, protective overs, armoring and cases are not covered under this warranty.

You can learn more about our own warranty policy on the following link:


No matter what happens to your binoculars, we will be here to help you.

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Kowa BD 12x56 XD Prominar Specifications

Binoculars seriesKowa BD Prominar XD
Made inChina
In production since-
Warranty10 years
Type of prism Roof - Schmidt/Pechan
Variable magnification No
Magnification. 12x
Diopter adjustment -
Lens size diameter. 56 mm
Exit pupil. 5.1488 mm
Field of view - FOV... 96m/1000m
Field of view (angular). 6.1712°
Apperent FOV (angular).
Eye relief distance. 18.188mm
Closest focusing distance. 3m
Twilight Factor 25.92
Light transmittance -
Relative Brightness 21.2
Lens coatings Fully Multicoated
Length.168 mm
Width.167.0236 mm
Height.78.9977 mm
Working temperature range-
Filled with Nitrogen
Focusing system Central
Diopter setting locationRight eye-piece
Minimal interpupillary distance.0 mm
Maximal interpupillary distance.0 mm
Type of BodySingle hinge
Water proof Yes
Fogproof Yes
Tripod compliantNo
Built-in Compass No
Built in Range finderNo
Image stabilization (IS) No
Able to float No


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