SureFire A2 Dual-Output Dual-Spectrum LED Flashlight Primary LED generates brilliant white spot beam, secondary LED's produce optional red flood beam Precision micro-textured reflector creates smooth, optimized beam Two 123A Lithium Batteries Maximum Output 120 Lumens, Low Output 10 Lumens High-strength aerospace aluminum body, Mil-Spec hard-anodized for extreme durability Two-stage tactical tailcap switchpress for momentary-on low, press further for high, twist for constant-on at either level