The Freeport splitter plugs into an earphone or headphone audio output jack. A fantastic multi-purpose phone stand. Holds phone by sticking onto the back via suction cup. Remove the suction cup then use it as a universal 3mm earphone splitter. Allows 2 earphone jacks to plug in and two people to listen to the same audio with their own set of headphones. Great for use with iPhone, Android, iPad, iPod Touchand other MP3/MP4 devices. Patent pending.