The Elgin 321 4-3/4L watch movement features an adjustable stud holder, providing precise regulation of the watch's timekeeping. It is equipped with shock protection, ensuring durability and resistance to external impacts. The movement includes a sweep seconds function, allowing for continuous movement of the seconds hand. It also incorporates a calendar feature, enabling the display of the date. Additionally, the D447 movement consists of 7 jewels, enhancing its overall performance and longevity.