Kowa BD 10x25 Compact Binoculars — Made in Japan

From the makers of premium scopes, Kowa’s heritage BD line brings a premium binocular experience in a travel-friendly package. Weighing just 320 g and measuring 111 x 107 x 39 mm, these compact binoculars slip easily into a pocket or bag, ready for travel, sport, or nature walks without weighing you down.

Don’t mistake small size for compromise. The BD 10x25 pack advanced optics and rugged design: fully multi-coated lenses with C3 prism coatings, phase-coated surfaces, and eco glass internals for brighter, crisper images while keeping environmental impact low. The dual-barrel architecture provides a balanced, comfortable grip for long sessions, while the oversized central focus wheel makes precise adjustments easy even when you’re on the move.

Close-focus performance is impressive for a compact pair, with a minimum distance of 1.8 m — perfect for observing nearby flowers, insects, and other close-range details. Built to handle the outdoors, they’re 100% waterproof and nitrogen-filled to prevent internal fogging, with a rubber-armored body that’s both grippy and durable in wet conditions.

Designed for all users, the twist-up eyecups accommodate spectacle wearers, and the generous eye relief ensures comfortable viewing for a wide range of users. Whether you’re at a horse race, stadium event, on a nature walk, or simply birdwatching, these binoculars deliver a bright, stable image with minimal shake thanks to the large focus wheel and robust build.

Key advantages

• Exceptional optics: fully multi-coated lenses, C3 prism coatings, and phase-coated surfaces for bright, sharp imagery with minimal light loss.
• Eco-conscious design: internal optics crafted from eco glass and a polycarbonate body for a lighter footprint.
• Responsive ergonomics: oversized central focus wheel reduces image shake during focusing; dual-barrel, rubber-armoured body for secure handling in all conditions.
• Near-range clarity: 1.8 m minimum focusing distance for detailed close-up observation of plants, insects, and other close-range subjects.
• Rugged reliability: waterproof construction with nitrogen purge; fog-proof performance in challenging environments.
• Spectacle-friendly viewing: twist-up eyecups and adjustable IPD (56–72 mm) for a comfortable fit.

Specifications

• Objective Diameter: 25 mm
• Magnification: 10x
• Minimum Focusing Distance: 1.8 m
• Real Field of View: 5.0°
• Exit Pupil Diameter: 2.5 mm
• Relative Brightness: 6.3
• Twilight Factor: 15.8
• Eye Relief: 17.7 mm
• Field of View at 1000 m: 87.3 m
• Dimensions: 111 × 107 × 39 mm
• Weight: 320 g
• Prism Type: Roof Prism
• Lens Coating: Fully Multi-Coated
• Waterproof: Yes
• Fogproof: Yes, Nitrogen Filled
• Body Material: Polycarbonate
• Focus System: Center Focus
• Interpupillary Distance: Adjustable, 56–72 mm
• Diopter Adjustment: ± 4
• Operating Temperature: -10 to +50 °C
• Storage Temperature: -20 to +60 °C
• Colour: Green