... camera, RFID for options 3,WIFI, GPRS/GSM, Bluetooth interface 4,GPS POS terminal handheld pos terminal/GPS POS terminal with GPRS/GSM/wifi ... data loss and other power5. Extend hardware options: GPS, camera, RFID, etc.6. Built-in one-dimensional scanning module7 ... HF RFID Read WriteExpansionInternal Wireless Communication module GSM/GPRS,Support GSM/GPRS Class10,GSM27.10 Power Source(Dual ...