The Fujinon Hyper-Clarity HC10x42 Binoculars are premium roof-prism optics expertly engineered for avid birdwatchers, backcountry hunters, and demanding outdoor enthusiasts. This high-performance instrument utilizes a robust yet incredibly lightweight magnesium-alloy chassis that minimizes neck fatigue during grueling all-day scouting trips. The optical path is upgraded with premium Extra-Low Dispersion (ED) glass elements and Super EBC multi-coatings on all air-to-glass surfaces to maximize light transmission and completely eliminate chromatic aberration. Designed to thrive in unforgiving wilderness conditions, the sleek housing is fully nitrogen-purged and O-ring sealed to provide 100% water and fogproof peace of mind during sudden mountain downpours. Featuring a specialized water-repellent coating on the external lenses and a fast, precise center-focus wheel, this glassing setup provides an astonishing 6.6-foot close focus distance that makes it just as adept at examining nearby wildlife as it is at indexing distant ridgelines. Fujinon Hyper-Clarity HC10x42 Water/Fog Proof Binoculars w/ High Transmission Lens Coating, Magnesium-Alloy Body 16670625, Full-compact roof prism