1.Support MP3/WMA/WAV/ASF format 2.Firmware upgrade 3.Served as USB flash disk 4.Buit-in FM,save 40 preset channels 5.No driver needed for Win98/2000/ME/ XP 6.Screct capacity function for your personal date 7.Voice recording&tape,can store WAV/ACT voice format by microphone 8.Seven playing models 9.Seven EQ models 10.Sleeping&Timing off function. 11.Carton menu 12.GUI (Graphic user interface) easy for use