... 4.Built-in 4GB NAND Flash 7 inch touch ebook reader 1.7" TFT LCD TOUCH SCREEN / Resolution: ... , RMVB, VOB, landuse-dat, MP4, FLV, etc. Of the video 3GP,Support 1080P HD video4 ... setting, automatic shutdown, search function, information query system11.Built-in 4GB NAND Flash ,Suport micro ... soonBoot time5sMemory1-4GBVoice recordingYesPower off timeOFF, 3, 5, 10, 15, 20minPower life6-8HoursExpansion slotTF ...