Sennheiser ew 100 ENG G4 B-band, UHF Wireless Camera Combo System, Consists of: SK 100 G4 bodypack transmitter, SKP 100 G4 plug-on transmitter, and ME 2-II condenser lavalier microphone, Directional characteristic: Omnidirectional, EK 100 G4 Pocket receiver, 42 MHz Switching bandwidth, 20 Channel banks with up to 12 presets each, Up to 20 compatible channels, Audio transmission range: 25 - 18,000 Hz, Frequency transmission via infrared interface, Bodypack transmitter and pocket receiver with charging contacts for optional BA 2015 battery (NiMH), Pilot tone, Automatic frequency scan feature locates available frequencies, Audio gain: 60 dB, 4-Digit battery indicator on the transmitter and receiver, HDX compander, Frequency range: B-Band, 626 - 668 MHz, LCD display with AF level- and channel display, Transmission power: 30 mW, Incl. CL100 cable, CL 1 cable, and CA 2 flash unit adapter