Balanzza MINI USB Rechargable Digital Luggage Scale Capacity with Backlight Display, BZ400U 5 years,Blue,One Size Its ergonomic and compact shape lets you lift the objects easily and with less stress to your hands Its patented structure and functionality make it easy to lift, wait for the beep, and set it down Use it at home to weigh your childrens backpack, or the holiday gifts you are planning to ship, or that occasional parcel that needs to be sent No more changing batteries, this item work by USB with a mini USB connector to charge it Offering the most natural way to lift heavy objects. The screen is located on the upper side of the scale, making it easier to see the weight while lifting it with one hand