Audioformat:MP1,MP2,MP3,WMA,WMV,ASF,WAV SynchronouslydisplaysongwordageUpgradablefirmware7gradeequalizerBacklightdisplayinbluewithtimesettingSuperlonghourrecording(builtinvoicerecording)Deleteindividualordeleteallsong(recordedfile)DirectconnectionintoUSBport.plugandplay(Nosoftwarerequiredforwindowsxp/2000)UnusualdegreespacefunctionSwitch-offmemoryMultiboardsettings