Electronic Book 1.7" TFT E-book B021 ,working hours 5-7 hours 2.Processor: Rockchios 2729 3.Real ... price Electronic BookFactory Electronic Book for salesDescription7" TFT E-book B021Processor: Rockchips 2729Display:7“ TFT LCD displayer, resolution:800*480 PixelsText: TXT ... AT THE SAME TIMESHUTDOWN:(AUTO SHUTDOWN) OFF, 3,5,10,15, AND 20 MINSSCREEB REFRESH: FULL SCREEN REFRESH AND PARTIAL REFRESHSUPPORT ...