... , random play Microsoft audio, 3D, bass, volume, balance sound choices, the normal audio, Microsoft, rock, pop, classical , heavy bass, jazz, (my ... ,270 degree of support for background music playback.7.supports the video format, 720P high-definition decoding, support RM, AVI, ... seconds, 30 seconds, 5 minutes, 10 minutes, do not lock book function, support TXT, EPUB, FB2, HTML, PDB, PDF, DOC format ...