... portable mobile music, connecting your MP3, MP4, CD, DVD, iPod, iPhone, GPS, PSP, mobile phone, notebook computer, Micro ... 4 Ohms*Power supply: 5V/1000mA AC power adapter, Built in Rechargeable Li-ion Battery*Line in/Line ... voltage protection condition, this time you should change to adapter below6V to work properly.Package Included: 1x MINI ... . driver mini portable speaker for iPhone 4GS iPod MP3