The Citizen 4-S45920 watch movement is a mechanical movement that features a chronograph function, allowing for precise measurement of elapsed time. It utilizes an analog display, which provides visual representation of time through traditional hour, minute, and second hands. Powered by quartz technology, it ensures accurate timekeeping through the use of a quartz crystal oscillator. The movement includes a calendar feature, which displays the date. With 15 jewels, it reduces friction and wear within the movement, enhancing its overall durability and longevity.