*The 2 MOA Red Dot Sight is quick to acquire in close quarters while remaining fine enough to promote pin-point accuracy at an extended range*Red illuminated dot reticles with 8 level brightness control, you can cater the dot intensity to the situation at hand.*Gaialoop's IS System allows your new red dot sights to stand by and feel you anytimewhich can enhance battery life.omes with 2 CR2032 batteries. Extend the battery life, Gaialoop's IS System can make it! It allows your new red dot sight to stand by and feel you anytime, which presents automatically powers off in 5-minute motionlessness but immediately wakes up when it senses any slight shake.