Compact, accurate, digital USB postal scale lets weigh envelopes and packages without a trip to the Post Office or even leaving your desk. Connect the scale via USB to your PC or Mac to use it with popular online mailing and shipping services. Weight capacity is 25 lb. The LCD screen displays weight in easy-to-read digital format in lb./oz. (0 lb. 00.0 oz.) or kg/g (0 kg 000g). The LED illuminated "hold" feature continues to display the weight for 10 seconds after you remove your envelope or package. Ideal for weighing larger items that block your view of the display. The tare function lets you weigh items in a container without including the container weight. The automatic shutoff feature conserves batteries when the scale is not in use. Compact design fits in the busiest work space and stores neatly in most desk drawers. Digital postal scale is powered by USB cable (included) or three AAA batteries (sold separately).Compact, accurate, digital USB postal scale lets weigh envelopes and packages without a trip to the Post Office or even leaving your desk. Connect the scale via USB to your PC or Mac to use it with popular online mailing and shipping services. Weight capacity is 25 lb. The LCD screen displays weight in easy-to-read digital format in lb./oz. (0 lb. 00.0 oz.) or kg/g (0 kg 000g). The LED illuminated "hold" feature continues to display the weight for 10 seconds after you remove your envelope or package. Ideal for weighing larger items that block your view of the display. The tare function lets you weigh items in a container without including the container weight. The automatic shutoff feature conserves batteries when the scale is not in use. Compact design fits in the busiest work space and stores neatly in most desk drawers. Digital postal scale is powered by USB cable (included) or three AAA batteries (sold separately).