Sennheiser ew 100 G4-845-S 1G8, UHF Wireless System, Includes a SKM 100 G4-S handheld transmitter with mute switch and interchangeable E845 capsule, Frequency range: 1G8 (1785 - 1800 MHz), Transducer principle: Dynamic, Directional characteristic: Cardioid@+*Features of the EW 100 G4 (9.5”) receiver:*@+@+, 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, Frequency 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 display on transmitter and receiver, HDX compander, LCD display with RF/AF levels and channel display, Transmission power: 10 mW, 2 BNC antenna sockets, XLR male (balanced) and jack (unbalanced), Power supply: 10.5 - 16 V DC, Includes a rackmount, RJ10 connectifng cable, microphone mount, NT2 power supply and 2x AA batteries