The Sport ED Series includes our finest roof-prism binoculars, and our best spotting scope. ED objectives eliminate chromatic aberration for flawless color rendition. Phase-coated prisms for highest-possible image quality. Wide-angle design, yet sharp to the edge of the field of view. Internal focuser focuses down to just 6 ft.! All-magnesium/aluminum construction with attractive dark green rubber armor and red-anodized accents. Perfect for advanced-level bird-watching and wildlife viewing.