With a blazing maximum output of 3000 lumens—and an equally powerful strobe for self-defense or signaling—the K40M LED Flashlight from Acebeam is suited to a wide range of military, law enforcement, search and rescue, hunting, outdoor recreation, and home uses. A push-button tailcap switch turns the light on and off, while a magnetic selector ring at the base of the head controls six brightness levels and the strobe. The K40M's Type III hard-anodized aluminum housing is rated IPX8 water resistant and tested impact resistant to 3.9'. Its tempered glass lens delivers 98.3% light transmission. This 7.3" torch weighs 15.9 ounces and runs on three user-supplied 18650 batteries with at least 2600mAh capacity.