Kowa BD 10x25 Compact Binoculars

The Kowa BD 10x25 (product ID 47032125882675) is a 10x magnification compact binocular with a 25mm objective lens. That pairing gives you a 2.5mm exit pupil and an 87m field of view at 1000m solid performance for a pocket-sized binocular. It packs features normally found on much larger models and weighs just 320g. The dual barrel design sits comfortably in the hand for long spells.

The lenses are fully multi-coated and the prisms carry Kowa's C3 coatings. All internal optics use eco glass. These coatings deliver first-class light transmission for brighter and sharper images. Reviewers confirm colours are bright and true with no chromatic aberration visible. Eye relief is 18mm which works well with glasses.

The body is rubber armoured protecting the internal optics and giving a firm grip even in wet conditions. Nitrogen-purged and sealed for 100% waterproof performance with no internal fogging. The extra-large focus wheel reduces viewing disruption. Twist-up eyecups make adjustment quick and comfortable.

Close focus of just 1.8m makes these excellent for wildlife and nature. Designed and built in Japan with a 10-year manufacturer warranty. Compact size. Serious optics.

The 10x25 configuration gives a 2.5mm exit pupil fine in daylight but limited at dusk. Fully multi-coated lenses reduce light loss at each glass surface. C3 prism coatings boost reflectivity inside the prism system for brighter output. Nitrogen purging removes internal moisture preventing fogging when temperatures change. The 18mm eye relief is practical for spectacle wearers. At 87m field of view per 1000m the 5.0° angle suits focused observation rather than wide scanning.

The body is rubber armoured for grip and impact protection. All internal optics use Kowa's eco glass a manufacturing approach designed to reduce environmental impact. Lenses carry full multi-coatings and prisms use C3 coatings. The chassis is compact and lightweight at 320g.

Use a soft lens cloth to clean the optics never use paper or abrasive materials. Store in a dry place and use the carry case when not in use. Check the hinge tension and eyecups regularly. The 10-year warranty requires normal use with no unauthorised dismantling.