Sennheiser ew 100 G4-835-S B-Band, UHF Wireless System, Includes a SKM 100 G4-S handheld transmitter with mute switch and interchangeable E835 capsule, Frequency range: B-Band (626 - 668 MHz), Transducer principle: Dynamic, Directional characteristic: Cardioid@+*Features of the EM 100 G4 9.5"" receiver:*@+@+,