Features 4 different reticle patterns, a 7-position rheostat illumination and powered by a lithium battery. With a screen size of 22mmx33mm, this sight provides unlimited eye relief and unlimited field-of-view. Perfect for quick target shooting. Multi-Reticle Electro Sight, 1x, 22x33mm Quick Aqqusition Shooting Sight. High impact rated to with stand large caliber punishing recoil.