SODIAL(TM) Headset Adapter 3.5mm to 2.5mm Audio Adapter and Converter (Black) - 2.5MM - Male - 3.5mm FEMALE Adaptor converts the phone's own audio output into a universal 3.5 mm output 3.5 mm output means unlimited possibilities of device to broadcast the audio sound / music from your phone Adapter allows connection to any 3.5 mm stereo headset or portable speaker, including other iPod headsets Adapter also allows your phone / PDA to connect to any home stereo system Compatible with: Apple iPhone, iPhone 3GS 16GB / 32GB / apple iPad 16 / 32 / 64 GB