Sennheiser EW-D SKM-S BASE SET (R1-6) - Digital wireless handheld base set. Includes (1) EW-D EM digital 19 1/2" single channel receiver, (1) EW-D SKM digital handheld transmitter with mute switch (microphone module sold separately), (1) MZQ1 microp...Digital wireless handheld base set. Includes (1) EW D EM digital 19 1 2" single channel receiver, (1) EW D SKM digital handheld transmitter with mute switch (microphone module sold separately), (1) MZQ1 microphone clip , (1) NT 12 5 CW+ power supply with country adapters, (1) rack mount kit and AA batteries, frequency range: (520 576 MHz) Frequency Range R1 6 (520 576 MHz) Transducer Type Capsule Sold Separately Polar Pattern Capsule Sold Separately