The Rongta RP328 is an 80mm/58mm thermal receipt printer equipped with Bluetooth and USB connectivity. It provides a high printing speed of 250 mm/s and a resolution of 203 dpi. Core Specifications Printing Method: Thermal line printing Print Speed: Up to 250 mm/s Resolution: 203 dpi Effective Printing Width: 72mm (80mm paper) / 48mm (58mm paper) Paper Width: Compatible with both 80mm and 58mm thermal paper rolls Max Paper Roll Diameter: 80mm