1.Support 3G,WiFi,camera,58mm thermal printer, RFID reader,PSAM encryption,SIM card reader. 2. A RJ45 Interface ,2 USB Device 2.0 interface,Support RS232 serial,HDMI. 3.Widely used in supermarket POS, hotels,Tourist system,movie tickets,mobile top up, Prepaid Recharge , business offices, logistics tracking, mobile electronic payments, business data processing,inventory management, etc. 4.Support secondary development(SDK).