The Monarch 5 10x42 (Black) from Nikon features Nikon's proprietary lead and arsenic free optical-glass formula, known as Eco-Glass which is used for all lenses and prisms in this fine Monarch binocular. All of the air-to-glass surfaces are fully multicoated to ensure maximum light transmission, sharpness, and contrast. The roof prisms are finished with a dielectric coating that enhances the efficiency of the optical system to near perfection. This easy-to-handle optic is fully waterproof and fogproof, and a tactile rubberized exterior ensures a secure grip at all times.

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