Subdial is a type of watch feature that consists of a small dial within the main dial of a watch. It is used to display information such as the date, day of the week, elapsed time, or the time in a second time zone. Subdials can either be analog or digital, and can be used for a variety of purposes, depending on the design of the watch. They are often used to add complexity to the design of a watch, and can be used to make watches more functional and convenient.
