the t.bone TWS 16 HT 600 MHz, 16 Channel UHF Wireless System, 9.5"" Diversity receiver, Handheld microphone, 16 Switchable frequencies (606 MHz - 630 MHz), Max. 4 systems can be operated simultaneously, Adjustable squelch, XLR and jack output, External power supply (DC 12V / 500mA), Accessories included: 19""