Portable printer Specifications: Print printing method thermal line Printing speed 50mm/s(average), 65mm/s(max) Resolution 8 dots/mm, 384 dots/line Effective printing width48mm Charactercharacter setascii, gb2312-80(chinese) Print fontank: 12 x24 chinese: 24 x 24 Character per line32/42 Paper specpaper typethermal paper Paper width57.5 0.5mm Paper roll diametermax: 40.0mm Roll core inner diameter13mm(min.) Paper thickness0.06 to 0.08mm Paper supply methoddrop-in easy loading Reliability mcbf15 million lines Tph 50km Barcodes ean-13, ean-8, upc-a, upc-e, code39, code93, code128, codabar, interleaved 25 Emulation esc/pos Sensor paper end sensor Interface tiii-bt:rs-232, bluetooth; tiii-ir:rs-232, irda; Power adaptordc9v/2a Battery powerdc7.4v, 1.5a rechargeable li-ion battery Battery duration100m continuous printing Physicalweight275g(including battery & roll paper) Dimension (w x lx h) 102 x 77 x36mm Color beige Continuing printing when battery in charging Moq:30pcs, Weight:275g per unit Dimensions:102mm x 77mm x 36mm