They don't "rock" in the sense of playing music, though you could certainly use one to extend your rocking out time. No, they rock in the sense that some of their products feature a name that includes some geological term (like crystal, stone, etc.). These chargers do not resemble "rocks" at all, so not sure where they came up with that name, but likely some clever PR person decided it would be catchy. Anyway, they were showing every flavor of their "rocks" at CES, and all pack a lot of charge into a compact package. The mushroom looking gadgets in the image above are car chargers (called the "Flashroom") featuring dual output, USB-capable car charging of up to two+ amps. Oh yeah, they also look cute..
