... : USB2.0 and TF cardDevice Spec Main display:6 inch E-ink panel, 800 x600 resolution, touch panel(optional) 16 ... ,TIF,GIFAudio Format:MP3, WAV with background playbackReading: 6" E-ink Panelpaper like display, No back light without any radiation ... font size &last reading pageReader specificationContinue reading from the last page of each book being readSearch Bookmark, number of bookmarks ...