Sennheiser EW 122 G3/E-Band UHF Wireless System - bodypack (SK100 G3), electret lapel microphone (ME4) with cardioid polar pattern and 9.5" receiver (EM100 G3), 1680 adjustable frequencies, 20x banks (each with up to 12x 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, 60dB audio gain range, soundcheck mode, battery power display on receiver and transmitter, HDX compander, frequency range: E-band (823-865MHz), LCD display with NF and channel, 30mW HF power, 2x BNC antenna connections, balanced male XLR and unbalanced jack connections, includes NT2 power supply 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.