Sennheiser EW 172 G3/C-Band - UHF wireless system with bodypack (SK 100 G3) for instrument applications, 9.5" receiver (EM 100 G3), 1680x adjustable frequencies, 20 banks (each with up to 12 presets), frequency response: 25Hz-18kHz, infrared 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: C-band (734.000-776.000MHz), LCD display with NF and channel, 30mW HF power, 2x BNC antenna connections, male XLR (balanced) and jack (unbalanced) connections, includes guitar cable (CI-1), 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.