... 4~5hoursLast time:2~3hoursMaterial:ABS Plastic, Wooden BoxFunction:Support SD card, USB, FM, can connect to MP3,CD, DVD ... Size:13*13*14 cmProduct Weight:834gIntroduction:1`Support SD card, USB, connecting your MP3,CD,DVD,VCD,iPod, ... notebook computer.2`Support FM Radio receive External battery holder, easy to exchange.3`Support AUX external audio input ... , blackbarry, MP3,MP4,laptop,PSP,PC,Micro SD card