Wireless Microphone Systems consist of a Transmitter and Receiver.
Both are set to the same Radio Frequency.
Transmitters are available in Handheld or Bodypack formats.
Bodypack transmitters can be used with Headset and Lapel (Lavalier) Microphones, and Instruments (Guitar).
The Microphone Capsule is on the top of the Handheld Transmitter.