... 4TFT Screen LED Backlig5.E-book reader Product Name E-book reader 1.Built-in lithium ... battery 2.Display screen:cPAPER technology 3.Size:7 inch,Resolution:800*480 4.Supported audio ... .Supported video formats:AVI,MPG. 11.E-book reader function 12.Supported calender,date,time. ... 28 hours for audio output,6-7 hours for video output,12hours for e-book reader,about3500pages. ...