... Stereo speaker with MP3 player 3.factory good price mini loudspeaker box parameters Rating Power 3W*2 Frequency Response 200Hz ~ 18KHz ... Support SD card,, USB MP3 music reading and playing,FM radio 2.External high-capacity lithium battery,contain LED indicator 3 ... (AUX IN)connection,enjoy pleasure without restriction4,have FM scan radio function, reception everywhere5,support read TF card, and can ...