Sennheiser ew 100 G4-CI1 1G8-Band, UHF Wireless System, With SK 100 G4 bodypack transmitter and Ci1 instrument cable, Frequency range: 1G8 (1785 - 1800 MHz), Includes rackmount, Ci1 cable, RJ10 connection cable, NT2 power supply unit and 2 AA batteries@+*Features of EM 100 G4 9.5