... scree, then using earphone. Video, 5 hours, E-book is about 7 hoursE-book pages: 5000 timesCharge ... and with earphone)about 15hrs video about 5hrs E-book--about 7hrsMode of Operation mechanical key / touch ... screenSpeaker: Built in E-BOOKANSI, UNICODE TXT,PDF,HTML, FB2,PDB, EPUB ... : Support MIC recording / support internal WAV recording. O/S: WIN CE 6.0 Power off time: ...