BTW, I received those scales today. Don't waste your money on this model. Two are close, the other two are far off. Closer after calibration, but still not enough to be useful. Also, if you just leave something sitting on the scale, you can watch the weight change! On 3 of them, the weight goes down, and on the other, the weight goes up as it sits there. Then it just fluctuates back and forth a good 20 to 30 grams. Even empty, it goes anywhere from -50 to +50 grams... Worthless, IMO.