wireless microphone speaker 1.support:CD/PC/MP3 2.2.4g receiver, ... ,active speaker 4.usb port,2*50W speak 2.0 wireless microphone speaker Function:1.It is designed for white board,full ... with DC 6V power supply,9.A way of wireless microphone input10.Two channel of audio input and a channel advanced ... Space5MHzDistortion≤0.2%Frequency Response20Hz-20KHzDimension(W×H×D)100*120*90mm