What does a watch displaying both the date and the month typically require?

A watch displaying both the date and month typically requires frequent user adjustments because these features often rely on a mechanical or quartz movement system that may not be able to automatically account for variations in month lengths and leap years. This means that while the watch may correctly advance the date on most days, it may require manual adjustments at the end of certain months or during leap years to ensure it accurately reflects the current date and month.

The functionality of such watches often involves complexities that cannot fully accommodate all calendar changes automatically. Consequently, a user must regularly check and adjust the timepiece to maintain its accuracy. This need for ongoing user intervention to correct the date and month makes frequent adjustments necessary for the proper functioning of the watch.