Broadband multi-coated lens to provide crystal clear 3x image; Wide field of view - 30% bigger than comparable models from other brands; Windage/elevation adjustability for optimum view centering; Innovative flip-to-side mechanism for quick transition between 1x and 3x image; Adjustable eyepiece for easy dioptric correction; Precision machining and anodizing for maximum strength and wear resistance; Patented quick-detach lever lock mounting base; 42mm center height for most common dot sight combination; Completely sealed and nitrogen filled for fog/weather proof; Black Finish