High accurate weighing results,fast and stable,easy to operate . Applies to industry, agriculture, business,school,scientific research and other units for the rapid determination of quality and quantity of objects. Automatic fault detect. Over load alarm and protection function. External calibration. Digital Weighing scales units,gm,ct,oz,lb,tola,gn. 6V/2.5Ah rechargeable battery inside. LCD Display white backlit or Green color. Stainless steel pan. RS232 interface(optional). Extra display(optional). Product Origin : China Product carries 1 year Company Service Warranty, any damaged parts needs to be replaced at cost.