3.3FT 1- Meter Stereo 3.5mm Audio Headphone Extension Cable Male to Female M/F MP3 MP4 3.5mm Male To 3.5mm Male Extension Cable. 3.5mm Mini Stereo Plug And The Other End Has a Male 3.5mm Mini Plug. This cable can be used to connect two devices with 3.5mm stereo jacks, such as computer sound cards, speakers, CD players, MP3 players etc. Length: About 1M. Color: Black.