Quite possibly the best binocular system ever made in this class of optics. The Legend Ultra-HD has three key ingredients that make it so: ED (Extra-low Dispersion) prime glass which produces a color tuned, high resolution image. Ultra wide-band custom coating which produces the brightest possible light by coating each lens individually to maximize available light. RainGuardHD - Bushnell's permanent water-repellant coating. The Legend Ultra-HD also has an extremely wide field of view to easily view moving animals or objects and is lightweight with a streamlined feel.