TruGlo Dual Color Open Red Dot Sight features 5 MOA reticle for quick acquisition 2 choices of reticle color for contrast against any target/background adjustable rheostat for brightness control unlimited eye relief water and shock resistant click windage and elevation adjustment and has a wide field of view. Also featuring 24X34mm window for ultra-fast target acquisition anti-reflection coating integrated Weaver style mounting system and 3V-CR2032 battery included. Magnification: 1x. Objective: 24X34MM Screen. Field of View: 74ft 100yds. Eye Relief: Unlimited. DOT Size: 5 MOA. Finish: Black. Battery: 2032 3V Lithium (included).