iDream Portable Active Speaker 3W loudspeaker

Portable Active Speaker Features:
-Lightweight speakers for maximum portability.
-Two stereo input jacks designed for connection to your PC or MP3 player.
-USB Output allows you to charge your chargeable MP3 player simultaneously.
-Battery compartment allows for outdoor use (use 4pcs of AAA battery not included).
-Deep bass and astonishing mid and treble sounds provided by high precision drives.