... graphic printing 3.Serial, USB, IrDA, Bluetooth interfaces for option 2 inch portable bluetooth printerFeatures:Ø The smallest 2" mobile printer ... fall onto concrete Ø Variable interfaces (RS232C, USB, IrDA, Bluetooth) for option Ø Support text and graphic printing Ø Easier ... sensor, Cover open sensor InterfaceRS-232C, USB, IrDA, Bluetooth, WIFI(reserved) Power AdaptorDC12V/500mAh BatteryDC7.4V,1. ...