TWO Leather look padded infrared (IR) headphones and one DVD remote for your 2003, 2004, 2005, 2006, and 2007 Chrysler Aspen. Headphones for 2 people using an automotive entertainment system. PLEASE NOTE: This Remote will not work on aftermarket DVD units. You must have the original DVD unit that was installed in the automotive factory. Passive noise-cancelling headphones make use of the noise-canceling characteristics of their materials that are much like the soundproofing materials used in home theater systems. These passive noise-canceling headphones are composed of layers of materials packed with high-density foam and other noise-filtering materials. These soundproofing materials are very effective against high frequency sounds. They are able to reduce noise levels to about fifteen to twenty decibels.