The SD Series is a well built portable bench scale designed specifically with affordability, utility and everyday usage in mind. The durable painted steel treaded platform, ABS plastic housing and mounting brackets on a remote indicator. Ideal for home, office, mail room, shipping and receiving. 4 digits, 7 segments 0.8” high LCD. Weighing Units are lb, kg. Keys are ON/OFF/ZERO, UNITS/CAL. AC Adapter 9V DC(included) or 360-hour battery operation. (3) “C” Alkaline batteries (not included). Auto shut off feature after 4 minutes of no activity (battery operation only). 1-year warranty.