A 10x50 binocular with fully multi-coated optics and BaK-4 roof prisms — the largest objectives in the G400 lineup gather 42% more light than the 42mm models, delivering noticeably brighter images at dawn, dusk, and under overcast skies.

The 50mm aperture produces a 5mm exit pupil at 10x magnification — large enough to take full advantage of your dark-adapted eyes during twilight wildlife observation or casual stargazing. Silver, phase-correction, and high-reflective dielectric coatings on the BaK-4 prisms maintain contrast and color fidelity across the 325-foot field of view. Waterproof construction handles any weather. Twist-up eyecups with 17mm eye relief accommodate eyeglass wearers.

The slightly larger body compared to the 42mm models is a worthwhile trade-off for observers who frequently glass in low light — dawn hunts, evening birding, or scanning the night sky from a dark site.

Key Features

• 10x50 roof prism design with BaK-4 glass
• Fully multi-coated optics with dielectric prism coatings
• 325 ft field of view at 1,000 yards
• 5mm exit pupil for bright low-light performance
• 17mm eye relief with twist-up eyecups
• 2.2-meter close focus
• Waterproof construction
• Interpupillary distance: 56–73 mm
• Tripod socket

Ideal For

• Low-light observers — the 50mm aperture and 5mm exit pupil outperform 42mm models at dawn, dusk, and under clouds
• Casual stargazers — bright enough to reveal the Milky Way, star clusters, and the Andromeda Galaxy from a dark site
• Hunters and wildlife watchers — more light-gathering for early morning and late evening sessions

What's Included

Protective case, neck strap, lens covers, cleaning cloth