No.: Font A: 32 Character/Line, Font B: 42 Character/Line, Simple/Traditional Chinese: 16 charaters/lineCharacter: The Standard GB18030 Simplified/traditional Chinese Characters LibraryCharacter Size: ANK Character, Font A: 1.5*3.0mm(12*24dots) Font B: 1.1 * 2.1mm(9*17 dots) Simplified/Traditional: 3.0 * 3.0mm(24*24dots)Barcode Character:-Extended Character Set: PC437/Katakana/PC850/PC860/PC863/PC865/WestEurope/Greek/Hebrew/EastEurope/Iran/WPC1252/PC866/PC852/PC858/IranII/Latvian/Arabic/PT151,1251/PC737/WPC/1257/ThaiVietnam/PC864/PC1001/(Latvian)/ (PC1001)/(PT151,1251)/(PC1257)/(PC864)/(Vietnam)/(Thai)-Bar code: 1D Barcode: UPC-A/UPC-E/JANI3(EAN13)/JAN8(EAN8)/CODE39/ITF/CODABAR/CODE93/CODE128 2D Barcode: QRCODEGraphics Printing: Supports bitmap dowmload and print(support each bitmap size Max.8K, download up to 5pcs)Smart Power Saving: SupportVariable Speed Printing: SupportDormancy: SupportBattery: Built-in 1500mAh rechargeable lithium polymer battery, 7.4VOperating System: Compatible with Android, iOS, Linux, WindowsOperating Temperature: 0~50℃, Operating Humidity: 20~85%Storage Temperature: -20~ 60℃, Storage Humidity: 5~95%(No Dew)Item Size: 12.9 * 8.2 * 6.1cm / 5.1 * 3.2 * 2.4inItem Weight: 245g / 8.6ozPackage Size: 16.0 * 14.0 * 7.2cm / 6.3 * 5.5 * 2.8inPackage Weight: 450g / 15.9ozNotes:It does not support MAC system.Bill version can only print small tickets, label version can only print label paper.Before using, please follow the driver link to download the printer driver to the computer. If you have any questions, please contact us for help.The PC driver download link: http://www.dgkinkon.com/res/soft/2021/b2b7e8617220caa3.zipPacking List:1 * Thermal Printer1 * Paper Roll(57*30mm)1 * USB Cable1 * User Manual(English)