This combo is made from a high strength Zytel ® Polymer which makes it extremely durable. It has a 135 Lumen flashlight feature and a three position lever so it can be easily switched from the flashlight to the red or green lasers. The green laser is easily visible outdoors in the daylight and the red laser is perfect for indoor settings. It can be turned on and off from either side making this a perfect addition for both right-handed and left-handed shooters. It comes with a mounting system that locks into one of three positions so you can vary how it sits on your gun. It also includes a pressure switch that can be easy installed. (3.7v Rechargeable Lithium Battery and charging station included)