Eotech HWS EXPS3-4 1x Red Dot - Circle 4-Dot - The EXPS3 offers true 2 eyes open shooting and a 7 mm raised base that still allows for iron sight access. It features easy-to-adjust side buttons and an adjustable, locking, quick-detach lever for easy attachment and removal. It's night vision-compatibility makes it a versatile choice for day or night hunting. Includes quick start guide, batteries and protective case. Included in the box: HWS EXPS3 Quick-Start Guide Warranty Card CR123 Battery Protective Case