The ELCAN SpecterDR Dual Role Optical Sight represents a revolution in optical sight design. The world's first truly dual field of view combat optical sight, the SpecterDR switches instantly from a 4x magnified sight to a 1x CQB sight with the throw of a lever. Unlike zoom sights, the SpecterDR offers an optimized optical path and identical eye relief in both 4x and 1x modes. Depending upon the situation, the user may adjust the sight to illuminate the crosshair or just a brilliant red dot in the center. In 1x mode, the SpecterDR has by far the largest field of view in the industry. In 4x mode the SpecterDR offers a generous field of view, long eye relief, and ELCAN' Mfg: Elcan