The 3.5mm 1/8" stereo TRS connector is more commonly known as the Headphone Jack on portable mp3 players and mobile phones. This cable features a male 3.5mm stereo TRS plug on each end; with molded connector housings and strain relief boots. The cable is ideal for connecting a stereo audio output; such as an mp3 player or phone; to a stereo audio input; such as the auxiliary input on a car stereo system.