These binoculars are specifically designed for indoor use. They feature a long viewing distance, fast focusing, multi-coated anti-reflective lenses and a second reticle in the focal plane (no magnification). The durable housing is made from a single piece of aircraft-grade aluminum and is nitrogen-filled. O-rings ensure dust and water resistance. Specifications: - Magnification: 2-7x - Objective diameter: 32 mm - Focal length: 99 mm - Field of view: 12.8-3.8 m / 91.44 m (100 yards) - Housing diameter: 2.5 cm - Length: 287 mm - Weight: 423 g - Nitrogen-filled: Yes - Dust and water resistant: Yes
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