Sennheiser EW 122 G3 / B-Band - UHF wireless system with bodypack (SK 100 G3), electret lapel microphone (ME 4) with cardioid polar pattern and 9.5" receiver (EM 100 G3). 1680x adjustable frequencies, 20 banks (each with up to 12 presets), frequency response: 25Hz-18kHz, infra-red frequency transmission, pocket transmitter with charger contacts for optional NiMH battery pack (BA 2015), autotune (to find free frequencies), internal EQ, internal guitar tuner, guitar cable emulator (to simulate the sound of a cable), over 60dB audio gain, soundcheck mode, battery power display on receiver and transmitter, HDX compander, frequency range: B-band (626-668MHz), LCD display with NF and channel, 30mW HF power, 2x BNC antenna connections, male XLR (balanced) and jack (unbalanced) connections, includes power supply (NT2) and 2x AA batteries. Please note: Due to every country having different regulations, you may need to contact your local licensing authorities before using a wireless system.