Submersible to 10 ft. (3 m) Quick-detach lever fits both 1&';&'; Weaver and MIL-STD-1913 rail One 123 lithium battery 600 continuous hours at nominal setting 12 at room temp The EXPS2 offers true 2-eyes-open shooting and provides an unparalleled targeting experience. The all-purpose EXPS2 features easy-to-adjust side buttons and a quick-detach lever. It has a transversely-mounted lithium 123 battery. The increased height of the EXPS provides iron sight co-witness access in the lower third of the viewing window.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Reticle: Red Dot/65 MOA Circle Reticle Color: Red Stockable: Y Country Of Origin: US