Developed to give hunters and birders a slightly higher magnification over standard 8x optics while preserving a wide-angle field of view, long eye relief, and limiting visible hand-shake common in higher power glasses, Swarovski's 8.5x42 EL Binoculars feature a high-transmission optical path, legendary Swarovski optical coatings, and a weather-sealed magnesium-alloy housing that delivers exceptional performance with the ability to withstand extreme conditions.