Alpatronix C3 Ultra-Portable Mini Capsule Speaker with Enhanced Bass & 3.5mm Audio Jack for Apple iPhone, iPad, iPod, Samsung Galaxy, Nexus, HTC, Blackberry, Nokia, Smartphones, MP3/MP4 Players, Tablet, PC, Laptop [SONPRE EDITION] - (Black)
I'm surprised and amazed at the sound coming from this little unit.  It's smaller than I anticipated and sound is more robust than expected.  Don't have any sense yet for how long the charge will last and overall durability but first impressions are very good.