KOWA · Binoculars · Premium Full-Size
KOWA BD II XD 8x42 Binoculars
8.2° Wide Angle · XD Glass · Magnesium Body
Looking for a class-leading birding binocular with chromatically clean optics and maximum field of view? The KOWA BD II XD 8x42 delivers a 143 m field at 1,000 m, XD glass and phase-corrected roof prisms in a 640 g magnesium body – the new standard for serious birders.
Buy KOWA BD II XD 8x42 binoculars – class-leading wide-angle birding with XD optics
The KOWA BD II XD 8x42 is the premium full-size binocular of the BD II XD line – built for birders and naturalists who demand maximum field of view and uncompromising optical quality. With an 8.2° real angle of view and 143 m field at 1,000 m it ranks among the widest-field 8x42 binoculars in its price class. XD glass (Extra-low Dispersion) virtually eliminates chromatic aberration – decisive for identifying birds by fine plumage colour. Phase-corrected roof prisms maximise resolution and contrast. The 640 g magnesium body is waterproof and nitrogen-purged – ready for owl watching at dawn through to raptor counts on alpine ridgelines.
XD Glass · Phase Coating
XD glass and phase-corrected prisms – why the BD II XD line stays chromatically clean
KOWA’s XD glass (Extra-low Dispersion) is a high-index specialty glass that bundles the spectral components of light far more consistently than standard glass. The result: no purple or green fringing on high-contrast edges – a decisive advantage when you frame raptors against bright sky. The XD optics are paired with phase-corrected roof prisms that eliminate diffraction losses at edge surfaces, lifting contrast and resolution noticeably. Magnesium body, fully multi-coated optics and nitrogen filling round out the premium package.
143 m field of view at 1,000 m – wide-angle birding for dynamic observation
An 8.2° real angle of view ranks the BD II XD 8x42 among the widest 8x42 binoculars in its class. That translates to 143 m at 1,000 m – roughly 20 % more than many competitors. For you that means: faster bird location in the brush, easier raptor tracking on the wing and large flocks staying in frame. High edge sharpness keeps the entire field usable – not just the centre.
Magnesium body – 640 g of precision built for years in the field
Magnesium is roughly 30 % lighter than aluminium at comparable strength. The BD II XD 8x42 leverages that for a 640 g full-size body that handles knocks, rain and temperature swings without complaint. Nitrogen filling prevents internal fogging, and the rubber armouring keeps grip secure even with damp hands. With 17 mm eye relief and twist-up eyecups the binocular is fully spectacle-friendly.
Twilight factor 18.3 – usable deep into the golden hour
The 5.25 mm exit pupil and a twilight factor of 18.3 mean the BD II XD 8x42 delivers usable images well into dusk – decisive for owls, nocturnal raptors and wildlife observation in the golden hour. For dedicated birders who want to identify birds in the first and last minutes of daylight, 8x42 is the ideal format.
Key features – KOWA BD II XD 8x42
- 💎 XD glass (Extra-low Dispersion) – chromatically clean images without fringing
- 🔍 8x magnification with 42 mm objective – classic birding full-size
- 🌄 143 m field of view at 1,000 m (8.2°) – class-leading wide angle
- 🔬 Phase-corrected roof prisms – maximum resolution and contrast
- 🔧 Magnesium body – light (640 g) and extremely rugged
- 💧 Waterproof and nitrogen-filled – fog-proof in any weather
- 🌜 Twilight factor 18.3 – usable images deep into dusk
- 👁️ 1.8 m close focus
- 👓 17 mm eye relief – fully spectacle-friendly
- 🏅 10-year KOWA warranty + 2-year Swiss statutory warranty
Who is it for?
The KOWA BD II XD 8x42 binoculars are made for dedicated birders, nature schools, hunters and outdoor professionals seeking uncompromising optics and maximum field of view in a rugged full-size body – buy now at Swiss-Sale.ch, your Swiss specialist for premium optics with fast shipping from Switzerland.
Technical Specifications – KOWA BD II XD 8x42
| Model | KOWA BD II XD 8x42 |
|---|---|
| Type | Binoculars (roof prism) |
| Magnification | 8x |
| Objective diameter | 42 mm |
| Field of view at 1,000 m | 143 m (8.2°) |
| Exit pupil | 5.25 mm |
| Eye relief | 17.0 mm |
| Close focus | 1.8 m |
| Twilight factor | 18.3 |
| Relative brightness | 13.3 |
| Glass type | XD glass (Extra-low Dispersion) |
| Coating | Fully multi-coated |
| Prism coating | Phase-corrected |
| Body | Magnesium alloy |
| Waterproofing | Waterproof, nitrogen-purged |
| Dimensions (L×W×H) | 139 × 128 × 52.5 mm |
| Weight | 640 g |
| Eyecups | Twist-up |
| Dioptre adjustment | Yes, on right eyepiece |
| Origin | Designed in Japan |
| EAN | 4580614170451 |
| Warranty | 10-year manufacturer warranty + 2-year Swiss statutory warranty |
Package Contents – KOWA BD II XD 8x42
- 🔭 KOWA BD II XD 8x42 binoculars
- 👜 Carry pouch
- 🪢 Neck strap
- 🛡️ Objective lens caps
- 🛡️ Eyepiece caps
- 📄 User manual
Frequently Asked Questions – KOWA BD II XD 8x42
Find answers about the KOWA BD II XD 8x42 binoculars – from XD glass and phase coating through field of view and spectacle compatibility to Swiss shipping.
