Model XP-350B Printing Method: Direct Line Thermosensitivity Resolution 203 DPI Print width 76mm Printing speed 152mm/s Communication Interface: USB, 9P Serial Port + USB Print Head Position Detection Medium - Paper Type - Thermosensitive Roller Paper, Dry Adhesive Paper, etc. Medium Width 20 mm~82 mm External diameter of paper roll up to 100mm Paper Roll Inner Diameter Minimum 25mm Paper delivery, tearing or peeling Power supply input 24VDC, 2.5A Physical properties, weight about 1.52 kg Appearance size 220 (D) x 148 (W) x 150 (H) mm