Sennheiser EW 112P G4 B-Band, UHF Wireless Camera System, Consists of SK 100 G4 bodypack transmitter, EK 100 G4 pocket receiver and ME 2 condenser lavalier microphone, Frequency range: B-band (626 - 668 MHz), Polar pattern: Omnidirectional, 42 MHz switching bandwidth, 20 Channel banks each with up to 12 presets, Up to 20 compatible channels, Frequency range: 25 - 18.000 Hz, Frequency transmission via infrared interface, Bodypack transmitter and pocket receiver with charging contact for optional BA 2015 (NiMH) rechargeable battery (not included), Pilot tone, Autotune for finding free frequencies, Audio Gain includes 60 dB, 4-Digit battery indicator on the transmitter and receiver, HDX compander, LCD display with NF level and channel display, 10 mW transmission power, Includes CL100 cable, CL 1 cable and CA 2 flash unit adapter