White, Address label, 1-1/8"x 3-1/2". DYMO LabelWriter printers use thermal printing technology, so they never need ink or toner. They let you print one label or hundreds without sheet-label hassles and waste. They print directly from Microsoft Word, Microsoft Outlook and other software programs. And they include a suite of software you can use to design your labels, add graphics, check addresses and much more so you get the results you want, every time.