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Celestron 71376 12x50 Granite Binocular (Black)

Fully Broadband Multi-Coatings -provide maximum throughput light transmission with the highest levels of contrast They provide superb natural color fidelity and vivid color saturation
BaK-4 Prisms with Dielectric High Reflectivity Coatings Phase Coated
Waterproof Fogproof -protection from the environment with nitrogen purging
Rubber Covered -- for protection from rough handling and with ergonomic features such as thumb indentations finger ridges to prevent slipping
Focus Knob Diopter Ring and Twist-Up Eyecups -made of metal for long life and precision movement :