30-LB LARGE CAPACITY; 3-WAY POWER: USB, BATTERY OR ADAPTER; CAN BE USED WITH ONLINE POSTAGE SERVICES ; HINGED PLATFORM ALLOWS FOR WEIGHING OF LARGE ENVELOPES OR MAILING TUBES; RANGE: 0 30 LBS ; MECHANICAL OVERLOAD PROTECTION; 0.1% ACCURACY; MINIMUM WEIGHT: >0.1 OZ; MIN ADD-ON WEIGHT: >0.1 OZ; DISPLAY: LARGE 5-DIGIT LCD