The Gruen A SCH 1931 watch movement features an adjustable stud holder, offering precise regulation of the watch movement. It is equipped with shock protection, enhancing the durability and reliability of the timepiece. The movement includes a sweep seconds hand for accurate timekeeping. It operates at a beat rate of 19800 vibrations per hour (vph), contributing to its timekeeping accuracy. Additionally, the movement is comprised of 17 jewels, aiding in reducing friction and maintaining smooth operation.