Dual Time refers to a watch complication that allows the wearer to simultaneously track the time in two different time zones. This feature is particularly useful for travelers, business professionals, or anyone who needs to keep track of time in multiple locations. Typically, a Dual Time watch displays the local time using the main hour and minute hands, while a secondary time zone is indicated through an additional sub-dial or a separate set of hands.

The secondary time display can be adjusted independently, allowing the user to set it to any desired time zone. Some Dual Time watches also include a 24-hour indicator to distinguish between day and night in the second time zone, enhancing the functionality and usability of the watch.

This complication is often found in both analog and digital watches, with various designs and mechanisms to suit different preferences and styles. In analog watches, the secondary time zone is usually adjusted via the crown or an additional pusher, while digital watches may offer more straightforward adjustments through their interface. Dual Time watches are valued for their practicality and the convenience they offer to those who frequently communicate or travel across different time zones, making them a popular choice in the world of horology.