The newest addition to the ProTac series is a perfect everyday carry light. This dual fuel ultra-compact flashlight accepts a single lithium or alkaline battery, providing you with ultimate flexibility in the field. TEN-TAP Programming: Choice of three operating modes: high/strobe/low high only low/high CR123A lithium battery output: High for bright light: 350 lumens; 6,400 candela; 160m beam; runs 1.5 hours Low for longer run time: 40 lumens; 720 candela; 53m beam; runs 14 hours Strobe for signaling or disorienting: runs 3 hours AA alkaline/lithium battery output: High: 150 lumens; 2,750 candela; 105m beam; runs 1 hour 20 Mfg: Streamlight