Liquid crystal display (LCD) with backlight AC Adapter (Included) or 4 AA Batteries (Not included) RS232, USB Host, USB Device, Ethernet or Bluetooth™ (available as an accessory) ABS housing, stainless steel pan, ABS draft shield (1mg models only), weigh below hook, transportation lock, manual calibration Stability indicator, stackable design with optional storage cover (excluding 1mg models), mechanical and software overload/underload protection, low battery indicator, auto shut-off, auto tare, span calibration mass included on models up to 620g capacity Battery Life 80 Hours with Disposable Batteries Legal/Not Legal for Trade Not Legal for Trade Units of Measurement Ounce Troy; Pennyweight; Newton; Grain; Gram; Kilogram; Pound; Carat; Ounce; Custom; Pound:Ounce Working Environment 50°F – 104°F, 80%RH, non-condensing (10°C – 40°C, 80%RH, non-condensing)