EVERMARKET(TM) Headset Adapter 3.5mm to 2.5mm Audio Adapter and Converter (Black) - 2.5MM Male - 3.5mm FEMALE EVERMARKET(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 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 All rights reserved. EVERMARKET is a registered trademark and is protected by US Law.