Leatherman 831140 Monarch 400 LED Flashlight, Black 45 Lumen light output powered by one AA battery with On/Of Tail switch 3W LED with 1.0 hrs of run time - plated & textured reflector with white light Body & Bezel are constructed from aluminum which has been hard anodized Humidity Resistant, Corrosion Resistant, Shock Resistant, Power Management Circuitry for Steady Light Output, Removable Pocket Clip and Keychain Ring Water Resistant, Rated IPX6