The compact Crimson Trace CMR-207G features a powerful 400 Lumen white LED light with an integrated green aiming laser which is adjustable for windage and elevation. You can identify your target and make precise hits in less than optimal conditions. The ambidextrous activation points allow for easy activation from either side of your firearm. The CMR-207G is programmable for laser + light, laser only or light only. The Rail Master Pro has an auto-shutoff feature that will power down the unit after 5 minutes to prevent battery drainage while the firearm is in a case or holster. Power is provided with one CR123 lithium battery.