This simple, weight-only electronic scale is perfect for letter & small parcel mail to ensure correct postage without overpayment. The low-profile design is easy to use & store. Flip-up letter stand holds large envelopes. Office scale offers a 25 lb. capacity & includes a postage rate chart. Scale is powered via the included AC adapter or included 9V battery. Scale also has a Hold feature for large parcels, a Units key to toggle between lb / oz or kg / g, a Tare key & an On / Off key.