... 2,GPS,camera, RFID for options 3,WIFI, GPRS/GSM, Bluetooth interface 4,GPS POS terminal handheld pos terminal/GPS POS terminal with GPRS/GSM/ ... and other power5. Extend hardware options: GPS, camera, RFID, etc.6. Built-in one-dimensional scanning module7. Communication ... Accuracy 2.5m,In motion 0.01m/sExpansionInternal HF RFID Read WriteExpansionInternal Wireless Communication module GSM/GPRS,Support ...