Professional scale, can meet your specific needs. High-precision pressure measurement sensor system with quick and accurate response at all times. Large LCD display, easy to read, and clearer. The scale comes with a silicone base to ensure stability and prevent slipping of the brewing pot or cup. This scale is a useful and essential tool for brewing coffee and weighing coffee beans before and after grinding, ensuring amazing results. Power 1.5 * 2: Volt battery. AAA