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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Bushnell Trophy 10x42mm Roof Prism Binocular

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Bushnell Equinox Z 4x50mm Digital Night Vision Binocular

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USCamel 10x50mm Army Compass with Rangefinder Military Binocular

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