... 3 display screen, resolution is WQVGA(480*272) Double channel 0.25W/CHANEL, single channel 8 Two operations in button and Touch ... can be loaded into FLASH,MLCNANDFLASH is support Music player, support mp3 (lrc), wma, wav, midi, ogg ... , etc. Video player, support:mp4, wmv, asf, mpeg2, dat Photo viewer, ... Li-Lon battery, DC 5V charge 4.3" inch Portable GPS Navigation System