Many years ago, when bikes were much simpler, there was a similar product available, a "black box" looking thing. It claimed to provide similar results as this does. The black box was metal, a few inches square and had some weight to it - it felt like it had to be full of complex and futuristic circuitry.... A bike mag of the time decided to check it out.... They heated it up with a torch and a load of black plastic melted out of it revealing one tiny diode (zener diode, I think) resting under all of that goop....
