... zero tracking, tare, accumulating memory, low battery indication, overload protection. Calibration eigher by kg or lbKilogram(kg) and pound(lb) weighing ... .1g0.2g0.5g1gPan Size280×240mmPower AC:110/220V DC:6VMin. reference sample weight: 3kg/0.2g:5g, 6kg/0.5g:12 ...