These sights maximize the operator's peripheral vision, which guarantees faster target acquisition and gives the operator greater control in the engagement zone. The features built into EOTech holographic weapon sights provide a number of advantages: Maximum situational awareness from true heads-up display and two eyes open shooting - Variety of reticle patterns to meet your shooting needs with the smallest, most precise dot in the industry - Rugged reliability and undetectable operation in any environment - Reticle brightness adjustability to any environment and situation.