Kowa BD 10x56 XD Prominar Binoculars

The Kowa BD 10x56 XD Prominar (product ID 47032174149939) is a 10x56 binocular built for serious low-light observation. The 56mm objective lenses pull in exceptional amounts of light giving you a 5.25mm exit pupil and a 104m field of view at 1000m. That combination makes it a strong performer at dawn and dusk when light is scarce.

Kowa's XD (extra-low dispersion) Prominar glass eliminates chromatic aberration so colours are accurate and edges stay sharp. Fully multi-coated optics on every lens and prism surface maximise light transmission and deliver high contrast images with no washed-out tones. The result is a bright clear view even in difficult conditions.

The body is magnesium alloy with rubber armouring and weighs 1050g. Nitrogen-filled and fully waterproof it handles rain fog and cold without internal fogging. Eye relief is 18mm which works well for spectacle wearers. The central focus wheel is smooth and close focus performance is exceptional across the range.

These binoculars carry a 10-year manufacturer warranty. XD glass combined with fully multi-coated optics and a weatherproof magnesium body makes this a serious tool for wildlife watching and low-light use. High resolution high contrast and built to last.

The Kowa BD 10x56 uses a roof prism design with XD extra-low dispersion glass. XD glass bends different wavelengths of light at the same point eliminating colour fringing. Fully multi-coated optics on every surface push light transmission as high as possible. The 56mm objective paired with 10x magnification gives a 5.6mm exit pupil strong for low-light work. A 104m field of view at 1000m is wide for a 10x56. Nitrogen filling seals the body against moisture and prevents fogging when temperatures change rapidly.

The chassis is magnesium alloy lightweight and stiff. Full rubber armouring covers the exterior for grip and impact protection. The optical system uses Kowa XD extra-low dispersion glass in a roof prism configuration with fully multi-coated lens and prism surfaces throughout.

Brush dust off lenses before wiping with a clean optics microfibre cloth. Store in the supplied case away from moisture and heat. Check the hinge tension and eyecups regularly. The 10-year warranty requires the binoculars to be kept in good condition and free from misuse or accidental damage.