The FA-EN series analysis electronic balance internal calibration is a new economical analysis electronic balance launched by Lucky Balance in 2020. The main body of the balance is equipped with a fourth generation self-developed ultra-thin electromagnetic force movement. Based on the previous three generations, it has undergone upgraded reforms, breaking through the original bulky and clumsy design, with a small and flexible design, expanding the range of levers, higher sensitivity, and a smaller overall movement, reducing the torque between the spring plates and making transportation safer. The reduction in overall size has made the working area more adaptable. Internal calibration greatly reduces the error values for customers during operation and use.