For the $5 I'd paid for it, that would have been cool. But alas, apart from being a useless scam, it's quite innocent. I tore mine apart, and inside is very little. Inside the plastic box is a circuit ...
There are a lot of weird scam tools out there. Soaring power bills have made the " power saver " scam devices popular, but the other day I came across another odd one called a "USB Phone Battery ...