What does the red hand do on a GMT Watch?

A GMT (Greenwich Mean Time) watch is a type of watch that is designed to help the wearer keep track of two different time zones at the same time. This type of watch is particularly useful for travelers or people who frequently communicate or do business with people in different parts of the world.

They were originally developed for pilots and other aviation professionals who needed to keep track of time in multiple time zones, but they have since become popular with travelers and watch enthusiasts as well. Many luxury watch brands offer GMT watches as part of their product lineup, and there are also many affordable options available from a variety of brands.

The red hand on a GMT watch typically indicates a second time zone. A GMT (Greenwich Mean Time) watch is designed to help the wearer keep track of two different time zones at the same time. The regular hour hand on the watch indicates the local time, while the red hand, which is often an arrow or triangle-shaped, indicates the time in a different time zone.

The red hand is usually controlled by a separate movement or mechanism within the watch, allowing the wearer to adjust it independently from the regular hour hand. This allows the wearer to easily track the time in a different time zone without having to do any mental calculations or conversions.

Some GMT watches also feature a rotating bezel or additional sub-dials that can be used to track additional time zones or to perform other functions such as measuring elapsed time.