... easily navigate slides.Text support TXT, FB2, PDF, EPUB, RTF, MOBI, HTM, HTML and so on, other formats continue to updating ... ,audition Picture formatJPG,BMP,GIFE-bookTXT,FB2, PDF,EPUB,HTM,MOBI,RTF,HTMLOutput frenquancy range20Hz-20KHzsignal-to-noise ratio≥85dBMenu languageChinese ...