1)wifi, bluetooth,printer 2)optional gps, gprs,barcode scanner, rfid,camera 3)4000mah battery 4)SDK, ... Mouse and keyboard by USB portCommunicationWLAN USBSerial port Audio GSM/GPRS/3GBluetooth 802.11b/g1 USB 1.1 Host,1 Client ... Software DevelopmentWindows Mobile SDKProgramming EnvironmentMicrosoft® Visual Studio® 2005 support NET CF 2.0Microsoft® Visual Studio® 2008 support NET CF3.5Develop language ...