Sennheiser EK 2000 IEM GW G-Band, Pocket receiver for IEM 2000 G3 systems, 75 MHz switching bandwidth, 26 Banks of up to 32 frequencies, Limiter, 2x 1.5 volt AA, 3.5 Jack output, Frequency range: G band (558 - 626 MHz), Includes 1x Sennheiser IE 4 in-ear earphones