1,POS terminal with GPRS/GSM/wifi/bluetooth interface 2,GPS,camera, RFID for options 3,WIFI, GPRS/GSM, Bluetooth interface handheld ... pos terminal/ POS terminal with GPRS/GSM/wifi ... accidental data loss and other power5. Extend hardware options: GPS, camera, RFID, etc.6. Built-in one-dimensional scanning module7. ...