DP Audio Video 5-In-1 Audio Adapter Kit (Black) 3.5mm cable allows you to connect your device to your car stereo or home theatre system Audio splitter allows 2 headphones to be connected simultaneously Airplane Adapter allows you to connect to the airplane entertainment system using your headphones 3.5mm cable allows you to connect your device to your car stereo or home theatre system, Audio splitter allows 2 headphones to be connected simultaneously, Airplane Adapter allows youto connect to the airplane entertainment system using your headphones, Jack adapter allows you to connect your iPhone with a 3.5mm normal 2-channel earphone, 2.5mm Audio Jack adapter allows you to convert from a 2.5mm to 3.5mm connection