UltraFire WF-016 SSC P7 3-Mode (High/Low/Fast Strobe) Flashlight for use with 1pc 18650 Li-ion battery. The wf-016 always reverts to High mode when initially powered on. This is a great compact flashlight with overall lenght of 4.9", well designed and built.
Output measured by e-lectronics
High:350 Lumen : 1.1A
Low: 25Lumen : 70mA