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Kowa BD Series Prominar 10x42 DCF ED Binoculars


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The new Kowa BD Series 10x42 Prominar DCF Binoculars with ED Lens is the perfect travel companion to all nature lovers. It contains all the well-loved features of the KWA-PRO842 and the BD Series but with a larger magnification so you can get an even closer experience of the action. Light weight, compact yet rugged magnesium alloy body, waterproof and fogproof design, ultra close focus of just 1.5m, Prominar lenses, what is not to love about these binoculars?

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Compared to the previous BD models, the new Kowa BD 10x42 Prominar binoculars offers a wider field of view by approximately 20% and a sleek ergonomic design that will only impress. The lenses will contain the well-known Prominar XD lenses which significantly reduces chromatic aberration and leaves your images with high contrast and resolution.

In addition to its rugged design that prevents breakage in most severe weather conditions, these binoculars also come with a 10 year warranty so you will get impressive viewing experiences for a long time. There's nothing to lose when it comes to purchasing a Kowa product.


  • Waterproof / Fog-proof
  • 10x Magnification
  • Nitrogen Filled
  • 10 Year Warranty
  • Magnesium Alloy body
  • XD Lens


One of the major causes of deterioration of viewing quality in optics is chromatic aberration (colour blur). Chromatic aberration occurs due to the dispersion of light and the different wavelengths of light focusing on different positions, resulting in a red or purple fringing around the image. The optimum optical material to minimise chromatic aberration is fluorite crystal.

A fluorite crystal with extremely low dispersion characteristics is used for the convex lens of the KWA-PRO842/KWA-PRO1042 PROMINAR models. In place of an ordinary optical glass lens, the concave lens paired with the fluorite crystal lens is made of glass with special dispersion properties to reduce the chromatic aberration to a further degree.

This combination of fluorite crystal and glass with special dispersion properties nearly eliminates chromatic aberration and redefines the standards of colour brilliance.

This technology is the result of many years of optical design and has realised great reduction in chromatic aberration, while maintaining a large diameter lens and high contrast images when compared with conventional models.

The XD lens used in the KWA-PRO842/KWA-PRO1042 PROMINAR models has characteristics similar to those of fluorite crystal to significantly reduce the chromatic aberration. All lenses are environmentally friendly Eco-Glass. (Eco-Glass is an environmentally friendly glass that does not contain lead or other harmful substances.)

Made in Japan

Additional Information

Additional Information

Magnification 10 times
Aperture 42mm
Prism Type Roof
Prism Glass Quality No
Waterproof No
Fogproof No
Close Focus N/A
Field of View 108/1000m
Eye Relief 18mm
Exit Pupil N/A
Twilight Factor N/A
Tripod Adaptable N/A
Locking Diopter N/A
Dimensions N/A
Binoculars Weight .655
Warranty Information 10 Years
Shipping Weight N/A
Additional Specifications of Product Close Focus - 1.5m