Main functions & features USB2.0 port Built in 128/256/512MB/1GB/2GB flash memory Built-in FM radio 1.5" 65K colors OLED display(1.5/1.8"CSTN/OLED/TFT opton) Support MP3/WMA/WAV,AMV file player Support synchronous ID3 lyric Support E-book Multi-language display Driverless with Win2000/XP/ME 6 EQ mode :JAZZ,CLASSIC,ROCK,POP,NORMAL,SOFT,DBB. 7 Play modes: Normal/Repeat 1/Repeat all/Random/Shuffle all/Intro/A-B section Frequency range: 20 Hz-20 KHz Earphone output rate: 5mW+5mW S/N ratio: 90dB Distortion: 0.1% Playing time: 8+ hrs