... Diameter:18mmANK Character Set12X24 dot 1.25(Width)X3.00(Height) mmInternational StandardⅠ,Ⅱ Class Chinese font24X24 dot 3.00(Width)X3 ... , user defined character and Chinese characters double width printing, double height printing, the gap of the characters are adjustable.PowerDC12V/24V ... quality , WIN 7 ,XP support , Epos Support Cheap price Pos 58 mm thermal receipt printer ,Win 7 64 bit support