Adjusting the calendar function on a Citizen Eco-Drive watch ensures accurate timekeeping and optimal performance. This involves manipulating the watch’s crown and potentially other buttons to correctly set the day, date, and sometimes other calendar-related indicators, depending on the specific model. For example, a perpetual calendar model requires less frequent adjustment compared to a standard date display.
Maintaining an accurate date display is essential for record-keeping and maintaining the watch’s overall functionality. Complications such as day-date displays and perpetual calendars enhance the utility of the timepiece, contributing to the history of watchmaking’s pursuit of precision and practicality. Correct date setting also ensures the smooth operation of the watch’s internal mechanisms, preventing potential strain on the movement. Historically, calendar functions have been highly valued complications, reflecting the ongoing desire for watches to provide more than just timekeeping information.