Sennheiser EW 172 G3 / 1G8, 1,8 GHz Wireless System - SK100 G3 instrument bodypack, EM100 G3 9.5" receiver, 20 banks with up to 12 compatible preset frequencies + 1 Bank with writeable frequencies, audio range 25 - 18.000 Hz, infra-red frequency transmission, pocket transmitter includes charger contacts for optional BA2015 battery pack (NiMH), auto-tune to find free frequencies, internal EQ, integrated guitar tuner, guitar cable emulator to simulate the sound of a cable, audio gain (over 60dB range), soundcheck mode, battery power display on receiver and transmitter, E-Band frequency range 1G8 1785 - 1800 MHz, LCD display with NF and channel, 10mW HF power, 2x BNC antenna connections, male XLR (balanced) and jack (unbalanced) connections. Includes CI-1 guitar cable, NT2 power supply & 2x AA batteries.