1,POS terminal with GPRS/GSM/wifi/bluetooth interface 2,GPS,camera, RFID for options 3,WIFI, GPRS/GSM, Bluetooth ... data loss and other power5. Extend hardware options: GPS, camera, RFID, etc.6. Built-in one-dimensional scanning module7. ... 3MegaPixel with LED flashExpansionInternal GPS:Channel 48,Accuracy 2.5m,In motion 0.01m/sExpansionInternal HF RFID Read WriteExpansionInternal Wireless Communication ...