So we've been playing with the Devotec Industries Solar Sound Bluetooth speaker system for a couple days now, and we've got to say we're pretty impressed -- we just wish it could run directly (and indefinitely) off the solar panel, instead of requiring an internal battery that takes 12-24 hours to charge from the sun or four hours to charge off USB. That said, you will get eight hours of decent audio when the battery is full, and it's actually relatively loud -- you'll be more than fine indoors and in quieter spots, although cranking things up all the way results in some audible distortion. Of course, it's A2DP, so setup is a breeze wi
