Virtually indestructible LED emitter regulated to maximize light output and runtime * Two output levels- 1,000 lumen high for maximum light, 15 lumen low for extended runtime * Dual-output tailcap click switch-press for momentary-on low, click for constant-on low, return to off then press or click again for high * Precision micro-textured reflector creates smooth, optimized beam * High-strength aerospace aluminum body, Mil-Spec hard-anodized for extreme durability