BANGKOK MEETS THE ROLEX GMT-MASTER

Few watches carry the weight of genuine history. The GMT-Master is one that does. Conceived in 1955 at the precise moment when commercial aviation was shrinking the globe, it arrived not as an ornamental accessory but as an answer to a very real problem: how does one track a second time zone with precision, reliability, and ease, tens of thousands of feet above the earth? Its solution — a 24-hour hand and a two-colour rotatable bezel — was as logical as it was enduring.

This March, that story comes to Bangkok. PMT The Hour Glass presents From Time Zone to Time Zone, a special exhibition dedicated to the GMT-Master and its successor, the GMT-Master II as it details its remarkable journey over seven decades. Taking place at Level 1 of the Siam Paragon Fashion Hall from 6 to 22 March 2026, this special exhibition will give visitors an immersive look at a watch that began in the cockpit and would go on to circle the globe.

Dates: 6 to 22 March 2026

Venue: Siam Paragon Fashion Hall, Level 1, Bangkok

Admission: Open to all visitors

The post-war years brought with them an unprecedented shift in how people moved through the world. Intercontinental routes that had once taken weeks now took hours. Pilots, navigators, and the growing class of international travellers found themselves crossing multiple time zones in a single day; a situation for which the conventional wristwatch offered no elegant solution.

Rolex responded with the GMT-Master: a professional instrument fitted with a fourth hand, positioned to indicate a second time zone on a 24-hour scale. The two-colour bezel — alternating between day and night halves — made it possible to read both home and destination time at a glance. It was a distillation of purpose into form, and it set the tone for everything that followed.

The watch quickly found its way beyond the flight deck. Explorers, scientists, journalists, and artists adopted it for much the same reason as the pilots who wore it first: it worked, without compromise, wherever they happened to be. That reputation has never diminished. If anything, it has deepened over the decades as the GMT-Master evolved to meet the demands of each new era.

What makes the GMT-Master a particularly compelling subject for an exhibition is that its history is one of continuous, deliberate refinement. The essential character of the watch — the bezel, the dial, the four-handed configuration — has remained recognisable throughout. Yet beneath that familiar silhouette, almost every element has been reimagined, improved, and in several cases, reinvented entirely.

The bezel alone traces a material journey across six decades. From the original Plexiglas to aluminium in 1959 and eventually to the ceramic Cerachrom insert introduced in 2005, each transition brought greater durability, more vibrant colour retention, and a refined tactility that collectors have come to regard as one of the watch's defining sensory pleasures. The Chromalight display has advanced in step: the luminescent coating applied to the hands and indices has been progressively improved. The current iteration emits a distinctly brighter blue glow that markedly enhances legibility in low light.

The movement that powers the watch has been updated 11 times since the original Calibre 1036 GMT of 1955. The most consequential of these revisions came in 1982 when the Calibre 3085 introduced an independently adjustable hour hand. This single breakthrough allowed wearers to reset the local time hand without disturbing the running seconds or the GMT reference, making it far more intuitive to navigate across multiple time zones. The watch bearing this movement was renamed the GMT-Master II — a designation that continues to this day, carried by the current Calibre 3285.

1955 The GMT-Master debuts with the Calibre 1036 GMT, introducing a 24-hour hand and two-colour bezel designed for pilots navigating multiple time zones.

1959 The Plexiglas bezel insert gives way to aluminium, improving durability and sharpening the definition of the two-colour graduation.

1982 The Calibre 3085 introduces an independently adjustable hour hand. The watch is renamed the GMT-Master II, marking a significant functional advance.

2005 Ceramic makes its debut on the bezel, offering superior scratch resistance and colour permanence. The Cerachrom insert becomes a hallmark of the modern reference.

2018 The Jubilee bracelet returns alongside the Oyster, broadening the character of the GMT-Master II and appealing to a wider range of wearers.

2021 Chromalight is upgraded to produce a brighter blue luminescence, further refining legibility in darkness without altering the dial's daytime appearance.

Today The Calibre 3285 powers the current GMT-Master II, available in Oystersteel, yellow Rolesor, and 18 ct yellow gold across Oyster and Jubilee bracelet configurations.

From Time Zone to Time Zone is conceived as a journey through the watch's history and cultural significance. A series of thematic panels traces the arc from the GMT-Master's origins in commercial aviation through its gradual adoption by a broader world of explorers, creatives, and public figures. Visitors will encounter the stories of those who wore it — individuals who shaped both aviation history and the contemporary imagination — and understand why a watch initially designed for the cockpit came to occupy such a central place in culture at large.

Alongside the historical narrative, the exhibition presents various current references from the GMT-Master II catalogue, offering the opportunity to appreciate the depth of the present collection in person. The visit concludes with a short documentary film that charts the full trajectory of the GMT-Master, from its first appearance in 1955 to the present day. For those who have long followed the evolution of this reference, the exhibition provides rare context. For those encountering the watch for the first time, it offers an ideal point of entry into one of watchmaking's most sustained and purposeful stories.

Hosted by both Rolex and PMT The Hour Glass, it has over 15 boutiques across the region and has long been the destination of choice for enthusiasts and collectors alike. Its partnership with Rolex on this exhibition reflects both institutions' shared commitment to advancing the culture of horology; not merely as commerce, but as a discipline with its own history, craft, and continuing conversation.