Add length to an existing 3.5mm male-to-male stereo audio cable auxiliary, making it easier than ever to connect iPods, iPhones, media players, and other devices to a car stereo, portable speaker, or other compatible 3.5mm audio-output device. Simply connect the female end of the 3.5mm 1/8in. stereo audio extension cable to an existing 3.5mm male-to-male cable. It has a male 3.5mm mini plug like the one you plug into an MP3 player on one end, and a female 3.5mm mini jack on the other end. This cable is perfect to be used as an extension for stereo headphones, speakers, microphones etc. Because the cable provides a wired connection, there’s not the static or interference often associated with wireless transmitters