DYMO Desktop Mailing Solution w/LabelWriter Twin Turbo and 5 lb. USB Scale First, a LabelWriter Twin Turbo printer, the printer that holds two rolls of labels at the same time, so you can print address and postage labels, without having to switch rolls printer comes with DYMO Label and DYMO Stamps software, DYMO's super easy software for both Windows and Macintosh that will have you printing address and postage labels in minutes Includes 5-lb. USB-connected postal scale. Simply connect the scale to your computer, place an envelope or package on the scale and your DYMO Stamps software will indicate exactly how much postage is required to mail Includes starter rolls of white address and DYMO Stamps postage labels Easily create professional-looking labels that print in seconds Includes starter rolls of white address and DYMO Stamps postage labels Easily create professional-looking labels that print in seconds Holds two rolls of labels at the same time, so you can print address and postage labels, without having to switch rolls Printer comes with DYMO Label and DYMO Stamps software, that will have you printing address and postage labels in minutes USB-connected postal scale, place an envelope or package on the scale and your DYMO Stamps software will indicate how much postage is required to mail Sets up in minutes and works with Microsoft Windows XP/Vista (32- or 64-bit) or Mac OS 10.4 or higher