electronic scale,scale,weighing scale 1 high precision 2 rechargeable battery use 30days one time 3 scale from 1g to 30kg Weighing scale, price computing scale, electronic scale, electric scaleFEATURES ... % of full scale capacityCalibrate ionExternal calibrationOperating EnvironmentTemperature:-25-50 for storage,-10-40 for workHumidity:<70%RH for storage, <90%RH for workPower sourceDC:4Ah ...