... 40'G/40'H: 139/278/326(1) USB 2.0 professional loudspeaker plays in stage, shop, disco and KTV, ... 139/278/326 Specification:(1) Good appearance and design professional loudspeaker.(2) Excellent sound effect stereo loudspeaker system.(3) Loudspeaker ... SD card, FM, remote control, LED display 2.0 professional loudspeaker.(6) USB professional loudspeaker with euphonious alt, sweet mediant, voluminous bass ...