... SD card slot Digital portable Mini speaker for Iphone, computer,CD, MP3 & Mp4 mini speaker, computer speaker, speaker, ... box with new concept integral stereo portable mobile music, connecting your MP3, MP4, CD, DVD, iPod, iPhone, GPS, PSP, mobile ... 5V-6V,use computer 5V or power adapter 5V.Music may stop when voltage is above 6V and ... . Digital portable Mini speaker for Iphone, computer,CD, MP3 & Mp4