1.SUNPLUS 57mm*38mm*13mm 2.Compactness\exquisite support MP3/WMA 3.Blue backlight\E-book 4.English-Chinese dictionary with search and sound functions 5.Speed change repeat\good sound effect 6.72 hours recording(256M)\id3 lyric display 7.Digital FM radio, Change start picture free 8.No frive, like a portable hardware 9.Play 8 hours of polymer battery(+FM)