The EXPS2 offers true 2-eyes-open shooting and provides an unparalleled targeting experience. The increased height of the EXPS provides iron sight co-witness access in the lower third of the viewing window. It features easily adjustable side buttons and a quick-detach lever (fits both 1 Weaver and MIL-STD-1913 rail). It has a transversely-mounted lithium 123 battery which operates for 600 continuous hours at nominal setting 12 at room temp. The 20 brightness settings and a scrolling feature. The EXPS reticle has a 68 MOA circle with a 1 MOA dot.