Shure PSM-200-SE215 set S5, complete system. Contains: in-ear UHF transmitter, 9.5"/1U, 8 switchable frequencies, 4 systems possible simultaneously, 2 channels (2x mono), jack/XLR in, loop-outputs (jack/XLR), built-in limiter, phones (6.3mm), controllable input level, incl. external PSU (TS40E) and 19" mounting kit + in-ear UHF pocket receiver, 2-channel, non diversity, limiter, switchable mode (stereo/mix mode), jack input for ext. cable, incl. box and battery (9V), incl. earphones (SE215-CL) with 1 set of rubber ear pads and case. Frequency range S5 (842 - 865 Mhz). Please note: Due to every country having different regulations, you may need to contact your local licensing authorities before using a wireless system.