The MU1MMFS 3.5mm headphone extension cable (1m) features a 3.5mm (1/8' TRS) male audio connector on one end and a 3.5mm (1/8' TRS) female audio connector on the other, making it easy to extend the reach of your headphones between your iPhone, MP3 player or other mobile audio devices and your stereo system. To ensure long-lasting performance, this high quality headphone extension cord features moulded PVC strain relief at each of the 1/8' TRS connectors , which prevents the cable termination points from bending at sharp angles, in turn reducing the risk of cable damage. Extends the reach of your headphones to work with your mobile audio devices, and stereo system. Unique Slim connector design fits most iPod and iPhone 3.5mm stereo jacks without having to remove the protective casing. Backed by StarTech.com lifetime warranty. Extend the reach between your headphones and your mobile audio device or your stereo system. Extend the connection between your mobile audio devices and a stereo system.