The Pilot PA-86AB offers super clear safety enhancing cell phone communications through your Bose Headset (Lemo Connection). The PA-86AB has a built in amplifier to boost your cell phone conversations. You can also play a CD, MP3 or Ipod player through the PA-86AB and hear the music in true stereo sound. The PA-86AB is powered with one 9 Volt battery. The PA-86AB comes complete with cell phone connection cord and music connection cord.