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Forgoing traditional magnification and objective configurations, the Sig Sauer 11x45 ZULU9 Binocular slightly increases both to boost performance without making them too powerful or large to use for long periods. Sig also engineered it with Abbe-Koenig prisms which make the optical tubes thinner than conventional roof prism binocular tubes - this translates to a more comfortable feel in the hand and a more secure grip. Complementing the prisms are extra low-dispersion/high transmission glass, multiple proprietary lens coatings, and phase-correction prism coatings which produce bright and clear high-contrast images with true color fidelity across the entire wide field of view.
Its wide viewing angle and 11x magnification allows for viewing of distant objects versus a 10x, while helping to mitigate the visible hand-shake common in 12x binoculars; and the short 6' close-focus distance enables exceptionally detailed observation of birds, bugs, and insects at feeders or bushes. Rounding out the optical performance is a comfortable, long eye relief and an exit pupil that will cover the eye even when fully dilated in low-light conditions.
For long-duration observation sessions, the ZULU9 can be mounted on a tripod via a user-supplied optional adapter. Rubber armoring helps to give protection from drops and impacts while helping to provide a non-slip grip. Designed for durability, the lightweight polymer chassis is nitrogen-filled and O-ring sealed for fogproof performance and makes it submersible to 3.3 feet for up to 30 minutes. Twist-up eyecups provide a custom-fit eye relief for use with or without eyewear.
45mm objective lenses
Compact Abbe-Koenig style roof prisms
Reduced internal diffraction compared to conventional roof prisms for brighter images
More compact design allows for thinner optical tubes for a more comfortable grip
HDX extra low-dispersion, high-transmission glass elements corrects chromatic aberration for true color rendition and improved contrast
Fully multi-coated optics with a series of proprietary lens coatings
Short 6' minimum focus distance
315' field of view at 1000 yards
Wide 66° apparent angle of view
Long 16.7mm eye relief
Comfortable 4.1mm exit pupil
Proprietary Optical Coatings
SpectraCoat lens coatings:
Broadband, anti-reflection coatings
Reduce surface reflections across the entire visible spectrum
Improves overall light transmission for brighter images
Phase-correction silver prism coatings improve image brightness, contrast, and resolution
LenShield lens coatings repels water, oil, and other materials to keep lens clear and clean
LensArmor lens coatings resists scratches and abrasions
Use and Handling
Large center focusing wheel
±3 right-eye dioptric correction
56-74mm interpupillary adjustment range
Twist-up eyecups for use with or without eyewear
Tripod mountable with optional adapter
Lightweight, durable, and corrosion-resistant magnesium-alloy chassis
StealthID rubber armoring
Slip-resistant to improve grip
Protects against drops and impacts
Reduces light reflection off housing
Nitrogen-filled for fogproof performance
O-ring sealed to IPX7-rating, submersible to 3.3' (1m) for up to 30 minutes