This is a used (barely) HONASX (also known as the PAC Audio AAI-HON) dual auxilliary input audio adapter for select 2003-2006 Honda and Acura vehicles. It is not compatible with factory navigation radios, and external devices such as a CD changer or satellite radio tuner will need to be disconnected. Compatible vehicles include: ACURA: 2006 RL 2006 TL HONDA: 2003-2007 Accord 2006-2007 Civic 2003-2007 Element 2005-2007 Odyssey 2006 Pilot 2006-2007 Ridgeline 2003-2006 S2000 It provides 2 stereo audio inputs that can be used to play an iPod, MP3, DVD, Sirius/XM Radio or other music source through your car stereo via an unused cd changer or satellite radio input. The input is clear, without the static or interference from an FM transmitter. I have a mobile electronics installation business, and am selling off some excess inventory. Please feel free to send a message if you have further questions about any of my items. Thanks for looking!