1.Digital Mp3 Player JX-938; 2.Support Mp3,WMA,WAV Format; 3.High Speed USB 2.0; 4.SupportA-B Repeat; 5.Built-in Battery Digital Mp3 Player Mp3 Music Player JX-938 support mp3,wma,wav formats;chargeable lithium battery;high speed USB 2.0/U disk;digital voice recording function;support A-B repeat;7 EQ modes:normal,rock,pop,classic,soft,jazz,bass