Sennheiser EW-IEM-G4 Wireless Monitor System, Black

Features Consists of UHF bodypack receiver (EK IEM G4), 9.5" transmitter (SR IEM G4) and IE4 earphones Stereo / focus / mono modes/ Up to 1680 frequencies in 42 MHz switching bandwidth/ 20 Channel banks each with up to 12 presets Up to 16 compatible channels/ Frequency response 25 to 15,000 Hz/ Frequency transmission via infrared interface/ Pocket receiver with charging contacts for optional rechargeable battery BA 2015 (NiMH)/ Pilot tone