Exceptional sound in a compact, portable design.  Operates with 4 “AA” batteries (not included) or via USB power.  The 3.5mm connection fits most MP3 / CD players, portable gaming devices, laptops, and desktop computers. 

Product specifications:  4 Watts maximum power output.  Pre-amplified and magnetically shielded.  Includes the speaker (9.25” X 2.76”), 3.5mm stereo input cables, USB to DC power cable, travel bag, and user manual.  Speaker includes a power on/off switch, power indicator, and a volume control dial.