The Citizen 4-403631 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.