SureFire M3LT CombatLight Extended Range Dual Output LED 800 Lumens of High Output for 1.7 Hours; 70 Lumens of Low Output for 9.5 Hours Virtually indestructible 4-die LED emitter regulated to maximize output and runtime High-strength aerospace aluminum body, Mil-Spec hard-anodized for extreme durability High-strength aerospace aluminum body, anodized Mil-Spec hard-anodized (HA) for durability Two-stage tactical tailcap switchpress for momentary-on low, press further for high, twist for constant-on at either level