... computer, DVD, MP3, etc. 3) install convenient. infrared wireless microphone system(KS168-B)Here is the Infrared Advantages:1.Infrared light ... loudspeaker, receiver outfitted.2. The host machine adopts wall-mounted installation, output power is 50W.3. Suitable for 50 ~ 80 ... machine1setKS-HG Transmitter1set (Headset MIC) there are two kinds of mirophone for your reference, handheld MIC and chest-worn MIC ...