Mini SD card MP3 Audio format:MP3,WMA,WAV size:44x29.5x13.2mm ... .0 above Function characteristicsUSB InterfaceUSB2.0 high speedCapacity128MB ,256M,512M,1GB,2GB,4GB,8G(Optional)Storage DeviceRemovable Storage DeviceEQ ModeN/APlay ... /silver/black and so onPackageBlister package/gift boxCertificationCE,FCC,ROHS mini SD card MP3 PLAYER