Accuteck 440lb Heavy Duty Digital Metal Industry Shipping Postal scale (ACB440) Large Capacity: Weigh up to 440lb/200kg with 50g/0.05lb Precision Main Functions: ON/OFF, MODE, TARE keys with extra large Die casting Heavy Duty Metal Platform Measuring Units: Measures in lb, oz and kg User Friendly: Extended control board for over-size boxes with energy saving LCD Display Power: Operates on 4 AAA batteries or 9V AC adapter (Both included), Auto shut-off function