The Citizen 64-9317 watch movement is a mechanical movement that incorporates three main functions: sweep seconds, automatic winding, and a calendar display. It features a sweeping seconds hand that moves continuously across the dial, providing a smooth and precise measurement of seconds. The automatic winding mechanism allows the watch to be self-winding, eliminating the need for frequent manual winding. Additionally, the movement includes a calendar complication, displaying the date on the dial for added convenience.