Surefire Z2-S CombatLight - High-Output Tactical LED Flashlight w/Strobe- 2011 Model (160 Lumens) Z2-S-BK w/Strobe Black Virtually indestructible LED emitter regulated to maximize light output and runtime Strobe for tactical applications Precision micro-textured reflector creates smooth, optimized beam Coated, tempered window resists impact and thermal shock, maximizes light transmission High-strength aerospace aluminum body, Mil-Spec hard-anodized for extreme durability