... battery 3.good quality and low price Mini Speaker with USB Input Description: Bear SpeakerThis speaker has been put into stylish and economic ... . Mini, portable digital speaker for your convenience, connecting to your MP3,MP4, CD, DVD, iPod, iPhone, GPS, PSP, mobile phone, notebook computer, Hi ... (included)Blue/Green LED IndicatorWorking Voltage: DC3.4 V~5V Mini Speaker with usb input