Just sat down at the PC and here comes a TV commercial on the tube advertising a flashlight that runs on water. Anybody have one or have any idea on how dipping the flashlight in water activates some kind of a cell to make juice for the LED (I presume). If this is on the up and up it might be worth checking into and just leave in the bottom of my camp gear or truck. Might also be a scam. Any comments?? Maybe it's old technology with new advertising.