The ProTac 1L-1AA is the newest addition to the ProTac Series and a perfect everyday, ultra compact, handheld flashlight. This dual fuel ultra-compact flashlight accepts a single lithium or alkaline battery, providing ultimate flexibility in the field. This high lumen tactical light features the latest in shock-proof power LED technology and three different user selectable programs. The combination of size, output, and battery versatility result in one of the brightest and versatile everyday carry lights..