Designed to weigh any envelope or package up to 25lb for precise postage every time, the DYMO M25 postal scale saves time and money and eliminates your trip to the Post Office or mailroom. Plus it connects via USB to your PC or Mac so you can use it with popular mailing and shipping software, including Endicia InstaRate and DYMO Stamps. This scale is packed with great features - including an LED illuminated "hold" feature that locks the weight display for 10 seconds when the screen is obscured by a larger item, a tare function for accurately weighing items in a container and an automatic shut-off that prolongs battery life. Compact size fits on any desk and in most desk drawers. Powered by USB cable (included) or 3 AAA batteries (not included).