A GMT watch (Greenwich Mean Time watch) is a timepiece designed to display two or more time zones simultaneously. It features an additional 24-hour hand that works in conjunction with a rotating 24-hour bezel or a dedicated scale on the dial. This allows the wearer to track both local time and a second time zone—often home time or a travel destination—at a glance.

Originally developed for pilots and international travelers, the GMT function has become a hallmark of precision, versatility, and global lifestyle. Unlike a dual-time quartz watch, a mechanical GMT uses a specialized movement (such as the Seiko NH34 or ETA 2893) that enables independent adjustment of the GMT hand without affecting the main hour hand.

A well-designed GMT watch combines technical functionality with timeless aesthetics, making it an essential companion for anyone who crosses borders—whether for business or adventure.

A GMT watch displays two time zones using an additional 24-hour hand. The main hour and minute hands show your local time, while the GMT hand tracks a second time zone on a 24-hour scale or bezel.

To set your GMT watch:

Set the local time — Pull the crown to the second position and adjust the main hour and minute hands to your current local time.

Set the GMT hand — Pull the crown to the first position and rotate it to move the GMT hand. Align it with the correct 24-hour time of your second time zone (for example, home or destination).

The 24-hour hand moves once per day, helping you distinguish between daytime and nighttime in the second location. Whether you’re traveling across continents or managing teams worldwide, the GMT complication makes timekeeping effortless and precise.

GMT watches are admired for their blend of function and sophistication. Originally designed for pilots and frequent travelers, they offer the ability to track multiple time zones with ease — a feature that resonates in today’s connected world. Beyond practicality, their distinctive 24-hour bezels and dual-tone dials have become icons of modern watch design, symbolizing adventure, precision, and global perspective.