Green Laser - The human eye pick s up the color green more than any other color and Crimson Trace provides the brightest green laser available. Never before has the green laser market seen such incredible battery life – over 2 hours of run time on one CR2 battery. With Instinctive Activation, this patented feature allows the user to activate the laser by simply holding the firearm with a normal grip. This platform is the most lightweight and compact green laser system available on the market.