Koss iOne Adapter, for Connecting any Stereophone or Headphone to Your iPhone

Koss iOne is a Adapter for Connecting Stereophone To iphone. The iPhone was designed with a smaller jack which means that standard stereophone plugs are too big. The iOne adaptor plug allows you to plug any stereophone into an iPhone and hear music on the iPhone. It does not allow you to use the cell phone functions of your iPhone.