Thank you for viewing. This is a kit that allows you to use the factory audio controls when installing aftermarket audio in an S2000 or Odyssey. Retail price: 7,590 yen. Operation is normal. Everything in the photos is included. You can find the manual online by searching for "Galleyra S2000 manual infrared type" or similar keywords. Used item, so no returns, no refunds, no exchanges (3N).