Weigh envelopes and packages up to 1 kg with the DYMO M1 Digital Postal Scale. Connect via USB to your PC or Mac to use with popular mailing/shipping software for calculating and purchasing approved postage online with no monthly fee. Convenient hold feature locks weight display for ten seconds. Tare function accurately weighs items in a container. Includes an automatic switch off and an LCD screen that displays the weight in easy-to-read digital format – in kg/g or lbs./oz. The unit can be powered by USB cable (included) or three AAA batteries (not included).