The Tree SC-36 Digital Postal Shipping Scale is great for small to medium sized package and parcel weighing for postage calculations when mailing with UPS, USPS, FedEx etc. Weighs in g, kg, lb, oz, lb:oz It has a maximum capacity of 36lb and a resolution of 0.1oz Nothing fancy here, just a good old basic scale that is a very economical solution for people that need a scale that will do the job. It does have an AC power option, but it does not come included. We do sell them, so please let us know if you need one with your SC-36. If you require a higher capacity, we also sell the SC-76