2.1 Tower speaker 1, RMS:30W+10W*2 2, Driver unit:5.25"+3"*2 3, With USB/SD,FM,Karaoke 4, Knob control volume 2.1 Tower speaker system with ... VFD displayFeatures:1, Used for DVD/CD/TV/PC/MP3/MP4 ... and all audio device.2, With dance VFD display screen ...