... strain gauge technology 3) Automatic energy saving 20kg-40kg Electronic price computing scale Features1,Display,Weight,Unit Price,Total amount.2,Weight ... ,Zero,Total Clear.3,High precision gauge loadcell,overweight warning4,Water-proof button.5,Automatic powersaving and long standby time.6,Anti ... just tell us the detail of your products. 20kg-40kg Electronic price computing scale