Icetech DUETTE KS-007 Mini-Speaker with Retractable Subwoofer
The good:  Rechargeable, well-made unit, includes USB cable for recharging, very very small, easy to use.    The bad: Resonating chamber doesn't pump up the bass very much, low-fi sound, physically awkward connection to other devices.    If you want small, this thing is tiny.  It has a large sound for such a small box, but at volume, it's still a thin, crappy sound - just a loud one.      I love that it is rechargeable and it is small enough to fit in my pocket easily. The placement of the 3.5mm connector i