LD Systems MEI 1000 G2, UHF Wireless In-Ear System, Consists of 9.5"" stereo transmitter MEI 1000 T, body pack receiver MEI 1000 BPR, and earphones, Up to 8 systems simultaneously, and 160 selectable frequencies, Frequency range: 823 - 832 MHz and 863 - 865 MHz, Mono or stereo operation, Integrated limiter up