... Audio format:MP3,WMA,WAV Size:87x18x13mm color:black,blue,red,green,silver capacity:4GB Music stick MP3 Player with screen,music ... stick mp3System RequirementsHardwareIBM PC or compatible PC, Notebook or Macintosh with USB portOperation ... 30gColorblack,blue,red,green,silverPackageBlister package, color boxCertificationCE,FCC,ROHS Music stick MP3 Player