The DYMO LabelWriter 450 Twin Turbo features two rolls of labels ready to print at all times - enhancing efficiency by allowing you to print address labels and postage without swapping label rolls - and prints up to 71 four-line standard address labels per minute for maximum productivity. Create and print address shipping file folder and barcode labels plus name badges and more - all without the extra work and hassle of printing sheet labels on a standard desktop printer. *Compatible with Windows® 7 or later and Mac OS® X v10.8 or later. Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. Mac and OS X are trademarks of Apple Inc. registered in the U.S. and other countries.