SureFire’s G2X LED lights have high-efficiency LED emitters and a maximum output of 600 lumens. The LED emitter is regulated for maximum output and runtime. It has a brilliant tactical-level max output and an extended runtime low output. The precision reflector creates a smooth, optimized beam with plenty of reach and surround light. It also includes 2 extra Surefire CR123A batteries and a Lightjunction battery case.