The brightest, lightest personal flashlight ever created; and the only tactical light with a rubberized grip and tailcap switch. Two 3 volt lithium batteries with a storage life of up to 10 years (included). Machined aluminum covered by a rubber-armored sleeve for a sure grip. O-ring sealed for moisture protection. Available in black. One handed momentary 'blink' or constant 'on' switching. Unbreakable polycarbonate lens. Adjustable spot-to-flood focus. 114 lumens. 1 3/4 hrs. run time at regulated maximum intensity; 2 additional hrs. of declining usable output 5.72" 5.3 oz. with batteries