This scope utilizes extra-low dispersion (ED) fluoride HD glass, which produces bright and clear views with accurate color representation. Color, clarity, resolution, and contrast are further improved through the use of the proprietary SWAROTOP, SWARODUR, and SWAROCLEAN optical coatings, which maximize light transmission while adding scratch resistance to the lenses and allowing dirt, dust, and oils to be easily cleaned off for smudge-free lenses.