The 50lbs Digital postal scale is designed to meet various mailing and shipping needs, from a 0.2oz letter to a 50lbs package. Sensitivity--0.1oz（0-25lb);0.2oz(25-50lb) | Improved Large Display with Energy saving LED backlight allows you to read numbers even in the dark; | Choose a preferred Unit from different Modes: pound/ounce, kilogram and ounces | Smart Tare And Hold feature; Battery powered option enables you to weigh packages at any time any place; Also comes with Ac adapter | Worried about the accuracy of the scale after a long time use? See the innovation in this scale: you can do calibration by yourself choosing any knowing weight from 5lbs. Manufacturer Calibrated out of the box.