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Celestron 20x70 Echelon WP Porro Prism Binocular is a durable and good looking binocular which is constructed from polycarbonate material that made it firm while keeping it lightweight. It is ideal to use for long-range glassing across a field or valley and gazing at night sky with superb performance. The large size objective lens offers best optical performance either used for glassing across a field or valley or gazing at the night sky. The larger objective lens and Celestron's proprietary XTL coating offers optimum light transmission and delivers bright views even at low light. The binocular offers individual eye focus system that enables the binocular to perfectly focus according to the viewer's eyes. It is purged with nitrogen to resist internal fogging due to temperature change and also water proof to perform well in wet weather conditions. The long 19.5mm eye relief design offered viewer to see entire 52m field of view clearly and effortlessly
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