Product Description Specifications: Printing method: Thermal line Printing resolution: 8 dots/mm, 384 dots/ line Effective print width: 48mm Printing speed: 50mm/sec Western charactor: ASII ( 12x24 dots, 9x24 dots) Chinese charactor: GB18030, 24x24\16x16 Charactors: 32/42 per line Drawing: Support Barcode: EAN-13, EAN-8, UPC-A, UPC-E, CODE39, CODE93, CODE128, CODABAR, INTERLEAVED 25 Paper end sensor: Available Overheat proection: Available Dark DOT position: Available Auto dormancy: Available Interface : RS232, Bluetooth Battery: 7.2V Li-ion battery Battery alarming: Available Reliability THP: 50km Paper type Regular thermal paper Paper width 57.5+/-0.5 mm Paper thickness 0.06~0.08 mm Roll diameter 45mmmm(outer)/ 13mm(inner) Emulation : ESC/POS Measure(WxHxD): 80 x 55 x 125 mm