Portable Digital USB Shipping Scale saves time, money and extra heavy-lifting. This rugged, heavy-duty scale weighs heavy packages and parcels from 2.5 to 400 lb. Built-in, wraparound handle makes it easy to carry the scale to heavy items so you don't have to lug heavy items to the scale. The LCD screen detaches for convenient handheld or wall-mounted viewing, and displays weight in an accurate, easy-to-read digital format (0 lb. 00.0 oz. or 0 kg 000g). Connect via USB to your PC or Mac to use popular online mailing and shipping services. The "hold" feature continues to display the weight for 10 seconds after you remove your item from the scale. 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. Automatic shutoff feature conserves battery power. Portable digital scale is powered by a USB cable (included), AC adapter (included) or three AAA batteries (sold separately).