Screen: 2.4 inch full color TFT, 320*240 pixels,25 detect/s dynamic play speed Capacity: build in flash memory 256/512/ 1/2/4GB (Optional) Audio/video file format : MP3 / WMA / WAV / AVI High stereo FM radio 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 Build in hi-fi Speaker memory card slot: Mini SD Card( up to 4G) Battery: Built-in Rechargeable Li-polymer Battery. Software upgradeable U Flash Disk function: can be acted as USB Flash driver