When Jawbone came out with the Jambox back in 2010, the sales pitch was simple: here was a really loud Bluetooth speaker that was small enough to stuff inside a backpack when you wanted to have a dance party at the beach. (Okay, we're paraphrasing a little bit.) Three years later, though, "small enough to stuff in a backpack" isn't quite small enough. What about small enough to fit inside a suit pocket? Or a purse? Th
