Sennheiser ew 100 G4-945-S C-Band, UHF Wireless System, Includes the SKM 100 G4-S handheld transmitter with mute switch and E945 interchangeable capsule, C-Band (734 - 776 MHz), Includes a rackmount, RJ10 connecting cable, microphone mount, NT2 power supply, and 2 AA batteries@+*Features of the E945