Sennheiser ew 100 G4-835-S C-Band, UHF Wireless System, Includes a SKM 100 G4-S handheld transmitter with mute switch and interchangeable E835 capsule, Frequency range: C Band (734 - 776 MHz), Transducer principle: Dynamic, Directional characteristic: Cardioid, Receiver: 9.5"" EW 100 G4, 42 MHz Switching bandwidth, 20 Channel banks with up to 12 presets each, Up to 20 compatible channels, Fast frequency allocation for up to 12 receivers via link function with RJ10 connection, Audio transmission range: 25 - 18,000 Hz, Frequency transmission via infrared interface, Handheld transmitter with charging contacts for optional BA 2015 battery (NiMH), Pilot tone, Automatic frequency scan feature locates available frequencies, Integrated EQ, Audio gain: 60 dB, Soundcheck mode, 4-Digit battery indicator on the transmitter and receiver, HDX compander, LCD display with RF/AF level- and channel display, Transmission power: 30 mW, 2 BNC antenna sockets, XLR male (balanced) and jack (unbalanced), Power supply: 10.5 - 16 V DC, Includes a GA 3 rackmount, RJ10 connector cable, microphone holder, NT2 power supply, and 2 AA batteries