Weighmax 75 Lb Infra-Red Wireless Postal / Postage / Shipping & Mail Scale TARE mode: Tare feature allows you to place a container on the scale and reset the weight to 0. That way you can weigh only what is inside the container Easy buttons: ON/Off tare and mode Auto off Feature (after 180 seconds) and Low Battery Indicator. The scale has a Large LCD Display made from Hard ABS Plastic Material also futures a Flip-up Platform for Envelopes tubes and more Sensitivity up to a fifth of an ounce (0.2 oz - 10g) makes sure that you accurately weigh your packages for postage. Save money with every package you ship! Measuring units: Pounds / Ounces Kilograms / Grams Sensitivity: 0.2oz. Power source 9-volt Battery or 9 V DC Adaptor (both included) this scale also has a LIFETIME WARRANTY from the manufacturer