The MUY1MFFS Slim 3.5mm Stereo Splitter Cable/Y-cable features one 3.5mm male and two 3.5mm female audio connectors, splitting a single headphone jack into two. A practical, cost-effective audio solution, the 3.5mm stereo splitter cable features slim connector moulding that fits easily into a 3.5mm headphone jack, even if the iPod/iPhone/iPad/MP3 player is in a protective case. The 3.5mm audio splitter/Y-cable is backed by StarTech.com's Lifetime warranty. Connect headphones and external speakers simultaneously to your computer. Slim connector design enables a simple 3.5mm audio device connection, even if the device is enclosed in a jacket or case. Backed by StarTech.com lifetime warranty. Split one 3.5mm audio jack into two separate outputs, enabling two sets of speakers to be used with a single sound card. Great for splitting audio from MP3 players and other mobile digital devices that feature a 3.5mm audio output jack (e.g. iPod, iPhone, iPad).