... ,Del,Feed…), menu operation interface, easy operation; Platen removal mechanism,easy loading paper and maintenance Prints SMS message on 58mm ... ) SIM card Interface: 3V Antenna: SMA connector, 50ΩimpedanceMicro Printer Printing method: Thermal-line dot method Paper: Thermal roll paper ... 12*24 dots Number of columns: 32 columns/Line Printing Head Life: Paper traveling distance 50KM GSM/CDMA SMS Printer