7 inch ebook reader 1.E-book format: ANSI, Unicode TXT, Doc, ... , PDB,and EPUB 2. Support Video, Music, Photo play 7 inch ebook reader Power (battery type): built-in Lithium polymer (2 ... step) World: 76 to 108 MHz (50 step) Channel: preset 30 channlesBit speed: MP3: 8 to 320kbps WMA: 5 to 320kbps ...