Black Mini Speaker for iPod Nano 4th Generation, iPod Touch, iPod Classic, iPod Video, iPod Nano, iPod Photo, Creative Zen Vision M, Sandisk Sansa, Microsoft Zune, Microsoft Zune 2 Portable Rechargeable Mini Bass Speaker System
Just bought it yesterday. Was amazed by quality and loudness of the tiny speaker.  Not sure how many times it can be recharged but the first charge lasted more than 40 min and didn't fade.   It can play from USB right away.  Can easily replace computer speakers - same quality and loudness as an average 15$ computer speaker.  The product is very tiny, - smaller than an egg.  Feels good in a hand.    Cons: it is easy to put sound plug in electric hole, don't do it, it may irreversibly break an electric outlet