Live Bluetooth Microphone app sends the audio to speaker without any wired connection. The app work with Bluetooth to send audio to speaker using device as MIC. By connecting your phone to sound output device(by AUX or Bluetooth) you can use the app as a microphone.

This app works very simply. Just connect your mobile device to the other Bluetooth device and your launch Live Microphone Bluetooth Mic Speaker. Your phone will be converted into Mic and announcement microphone.