The “42” in our 10x42 binocular refers to the diameter of the objective (front) lens in millimeters. Since the objectives will often be the largest portion of the optic, it will affect the overall size and weight of the binocular, and how much light it can gather.

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Athlon Optics Neos 12x50mm Porro Binocular

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ATN BinoX THD 4.5-18x50mm 384x288 with HD Video Recording, Wi-Fi, GPS, Smooth Zoom Thermal Binoculars

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Sig Sauer Zulu7 10x42mm Binocular

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Sig Sauer Zulu9 9x45mm HDX Abbe Koenig Prism Binocular

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Sig Sauer Zulu7 12x50mm with HD Lens, Open Bridge Binoculars

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Sig Sauer Zulu5 10x42mm Binocular

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Sig Sauer Zulu5 8x42mm Binocular

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