Printing method:thermal line printing Print speed: 70mm/sec Reliability tph life:100km Resolution:203dpi (8dot/mm) Printing width:48mm (384dot) Paper width :58±01mm Roll diameter: f=40mm Paper type :thermal paper Power supply (optional) :rechargeable lithium batteries Battery lithium: 7.4vdc/1500ma Charging mode: dc 9v/1.5-2a support the battery display function Print parameters :support to download the logo trademark Character size :384 dots/line Print character: 384dot /line; ank character – font a:12*24dots, 1.5(w)*3.0(h)mm – font b:9*17dots, 1.1(w)*2.1(h)mm – simplified/traditional:24*24dots, 3.0(w)*3.0(h)mm Printing chinese character :chinese: simplified chinese 24×24 point. Support 18030 font library, support taiwan and hk traditional(complex font) Ank:ank characters Extended charactertable: oem437/katakana/oem850/oem860/oem863/oem865/west europe/greek/hebrew/easteurope/iran/wpc1252/oem866/oem852/oem858 /iranii/latvian/arabic/pt151, 1251/oem747/wpc1257/vietnam/oem864/hebrew/wpc1255/thai Emulation: esc/pos/star command Interface:standard rs232/usb, bluetooth 2.0/spp agreement or infrared/ircomm agreement (optional). Working temperature :-10~50? Humidity:10~90%