... days (Using Mobile DDR)With background music while readingYesE-BOOK file formatDocument Formats: EPUB, PDF,TXT, HTML, FB2, CHM,Plucker, ... , etc. books and OSD menu.Other functionsBuilt-in Speaker; Comic reader function ,etc.In PackageUSB cable, User manual (PDF), charger (Optional ... to hurt the eyes.Strong light to see: Based on e-ink electronic paper display technology, the sunlight is not reflective ...