Inova T5-WB 125 Lumen LED Flashlight with Knurled Hard Anodized Aluminum Housing, Black Aircraft aluminum body machined from solid bar stock (not extruded tubing) with military grade, Type III anodized hard coat Lifetime LED bulbs that are virtually indestructible, delivering 125 lumen output Power regulated circuit for constant, non-dimming brightness up to 3 hour battery life Double AR-coated mineral glass optical window with Teflon seal that counters environmental pressure Shock proof, crush proof and water resistant construction capped with a impact resistant head