Eotech is a leader in imaging innovation and provides rugged reliable and innovative products that offer a true advantage to all who use them.The exps2 allows you to achieve faster target acquisition with the easy-to-see green reticle that is approximately 6x easier to see than red in daytime.It also maximizes rail space with its compact size and allows for co-witnessing of iron sights.The red dot also utilizes convenient side buttons to add a magnifier and features an adjustable locking quick-detach lever for easy attachment and removal.This model has a 68 moa ring w/ single 1 moa dot reticle uses a 123 lithium batter (not included) and is compatible with 1" weaver and mil-std-1913 picatinny rail.Battery: CR123AMagnification: 1xField Of View: 30 yds @ 4" Eye ReliefEye Relief: UnlimitedDot Size: 1 MOALength: 3.80"Weight: 11.20 ozFinish: BlackReticle: 68 MOA Ring/Green DotAdjustment Size: 1 MOAProofs: Water Resistant/Fogproof