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&#39;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).