This lightweight sight is ideal for all types of shooting, especially close in. Perfect sights for pistols, shotgun, when turkey hunting, bowhunters, crossbows and air rifles. Turn on the sight and a small Red Dot (4 MOA) appears in the center of your scope, 11-position click rheostat to adjust the brightness. Field of view in feet @ 100 yards: 88’; length: 3.8" weight: 5 oz.; eye relief: unlimited.