... flash4. PDA with 3.5'' QVGA with backlight, TFT touch window LCD5. with RS232, and USB 2.0 interface, ... standard battery:350gDisplay3.5'' AVGA with backlight, TFT Touch Window LCD,260K,240x320Touch Panel Analog resistance typeKeypad22 buttonsStandard ... with Network Independent A-GPS(optional))Thermal Printerbuilt-in printer 384paper width and length-58mm,>8m,dia-18mmExtended BatteryRechargeable, ...