The Califone WS Series MM1 Lightweight Microphone can be used as part of the WS-series Tour Guide or Assistive Listening System. The mic plugs into the 3.5mm mic input of the WS-T transmitter for clear vocal pick up, which is then wirelessly transmitted up to a maximum of 300" to any number of WS-R receivers. The head of the microphone pivots 90 degrees so it can be used as pictured or straight, without an angle.