The SureFire X400UH-A-GN Ultra-High Output White LED and Green Laser enables defensive-pistol owners to build a total firearm system that includes illumination for target-identification as well as a highly visible green laser that ensures instant targeting capabilities. The SureFire X400UH-A-GN Ultra-High Output White LED and Green Laser is designed for use with the company’s Masterfire Rapid Deploy holster, which features a auto-activate function that allows for instant-on capabilities, set by the end user. The holster is usable with nearly any handgun. Max output: 1000 lumens Batteries: 2 – CR123A batteries (included) Weight w/batteries: 4.9 ounces Mfg: Surefire