Listen to music wherever you go with the JDX Headphonies Speaker. Just plug in any device with a 3.5mm audio cable and the JDX Headphonies Speaker can play music for up to four hours. The Headphonies Speaker is big on sound with jaw-dropping volume and outstanding audio quality from any iPod, iPhone, Nintendo DS, Sony PSP and even most cell phones and computers. We assure you, the JDX Headphonies Speaker is a speaker you do not want to miss out on.