Screen: 1.8 TFT LCD display Capacity: build in flash memory 256 / 512 / 1 / 2 / 4GB (Optional) Audio/video file format : MP3 / WMA / WAV / AVI High stereo FM radio(FM Frequency Range:87-108MHZ/76-90MHZ) E-book reading function(TXT file) Record and play: High quality Digital voice recording , With 6 EQ mode, A-B repeat Display: Multi-language,ID3 tag, Lyric synchronization Photo browse JPG format Battery: Built-in Rechargeable Li-polymer Battery. Software upgradeable U Flash Disk function: can be acted as USB 2.0 High Speed