... cheap tablet pc KMR7140B(1) Adopt the RK2918as the main chip, ARM embedded Dual CPU Structure600mhz ANDROID2.2 smart operation system ... SupportedTXT,LRC,PDF,Html,Htm,EPUB, etcMax. capacity20MWI-FI FunctionMain chip setSamsung SWL-2480 ,802.11b/gTransmission rateMax54MbpsTransmission DistanceMax100mWork Frequency2.4GHz ...