7 inch ebook reader 1.E-book format: ANSI, Unicode TXT, Doc, PDF, ... ,and EPUB 2. Support Video, Music, Photo play 7 inch ebook reader Power (battery type): built-in Lithium polymer (2,800mAh ... at the same time Shutdown: (auto shutdown) off, 3, 5, 10, 15, and 20mins Screen refresh: full screen refresh and partial ...