... screen. 4, Karaoke function VFD Display USB/SD Karaoke 2.1 Multimedia Speaker Description:1,With usb,sd card read function, play mp3 type music ... power:30W+10W*2(RMS)2,Speaker driver:woofer5.25inch,satellite3inch*23,frequancy response:40HZ-20KHZ4,S/N:<70dB5,Dimension:subwoofer345*181*321mm,satellite130 ...