The DYMO LabelWriter 450 Twin Turbo Label Printer is the ideal solution for those who want to calculate and purchase postage as you need it, without monthly fees, contracts or commitments, for First Class (1-13oz.), Flat Rate Priority Mail , Express Mail , Postcard and International Mail (1oz.). This solution comes with everything you need to save money and process your mailings with ease! The DYMO USB Postage Scale weighs envelopes and packages up to 10lbs with precision and accuracy, works seamlessly with DYMO Stamps software to print USPS-approved postage, and runs off your computer's power (no separate power adapter needed). Plus with the DYMO LabelWriter 450 Twin Turbo printing precise postage is fast with print speeds up to 70 labels per minute. And since it holds two label rolls at once, you can print postage and address labels all without switching rolls. Plus every Dymo Digital Mailing solution comes with 200 DYMO Stamp labels, 830 address labels and 200 shipping labels, everything you need to get started tight out of the box.