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Why GMT watches are the ultimate travel companion

23/10/2025 by 10to2 Posted in Guides
best gmt watches
Image source: Rolex

For seasoned travellers, business jet-setters, and those of us who just like to know the time back home while sipping a negroni on their summer getaway, GMT watches are more than just wrist candy – they’re a handy tool to put a stop to that frequent question – what time is it back home? These smart timepieces, with their extra hand and 24-hour bezel, make crossing time zones a breeze. But what is a GMT watch exactly? How do they work? And which are the best GMT models to consider? Let’s dive in and unpack the history, mechanics, and enduring appeal of this horological jet-lag cure.


What is a GMT watch?

Let’s start with the basics. What is a GMT watch? The term stands for Greenwich Mean Time – the global standard for timekeeping before UTC (Coordinated Universal Time) took the reins. A GMT wrist watch displays two or more time zones simultaneously. It does this via an additional hour hand, often brightly coloured, that circles the dial once every 24 hours, paired with either a rotating or fixed bezel marked 1-24.

The GMT watch meaning is simple: it helps you track “home time” alongside “local time.” In an era where work meetings can span London, New York, and Singapore in the same day, or where a weekend city-break is just a budget airline away, GMT on a watch is very useful.

Rolex watch gmt master
Image source: @Rolex

Where did GMT watches come from?

The story begins in the golden age of aviation. During the 1950s, commercial air travel was booming, and pilots needed a way to track multiple time zones at a glance. Glycine launched the Airman in 1953, and shortly after, Rolex collaborated with Pan Am Airways to create a dedicated pilot’s watch – the GMT-Master, introduced in 1954.

The first Rolex GMT-Master, reference 6542, featured a rotating bezel split in red and blue to distinguish day from night. It wasn’t just functional – it was stylish. Over time, it became iconic, gracing the wrists of everyone from airline captains to Hollywood stars. The split-colour bezel has since become hugely popular, inspiring numerous watch brands to create their own interpretations.

Since then, brands across the spectrum have followed suit. From Seiko GMT watches at approachable price points to ultra-luxury interpretations from Patek Philippe, the best GMT watches span all tastes and budgets.

Rolex GMT 6542
Image source: Chrono24

Why GMT watches are perfect for travel

So why exactly do GMT watches earn the title of ultimate travel companion? For business travellers, a quick twist of the crown can mean the difference between confusion and clarity. Picture hopping from London to New York – with one adjustment, you can track local Eastern Time while the GMT hand quietly keeps London time. No mental arithmetic required, just a quick glance at your wrist. This feature is equally handy for those who work with international clients or suppliers across multiple time zones.

For pilots and cabin crew, GMT watches are a nod to their origins – designed specifically to help aviators juggle multiple time zones with ease. Adventurers, too, find comfort in the feature, whether trekking through the Himalayas or road-tripping across Europe; it’s reassuring to know the time back home. And for collectors, there’s no denying the appeal. A GMT adds complexity, functionality, and often a touch of colourful flair to any collection.

Quite simply, the best GMT watches balance utility and style in a way that few other complications can – a bit like carrying a Swiss Army knife on your wrist. You may not use every function daily, but when you do, it feels brilliant.

rolex gmt watch
Image source: Rolex

How does a GMT watch work?

At its core, a GMT watch uses a movement with an additional gear train to drive the 24-hour hand. There are two main types of GMT mechanisms, each designed for different kinds of wearers.

Caller/Office GMT: In this configuration, the GMT hand is independently adjustable while the main hour hand remains linked. This setup is particularly useful for those who want to track a second time zone – usually home time – without actually travelling much. 

Traveller/Flyer GMT: Often referred to as a true GMT, this version allows the local hour hand to be adjusted independently without stopping the movement. This feature makes it ideal for frequent travellers or pilots, as it enables quick local time changes when crossing time zones while keeping the home time intact.

So, how does a GMT watch work in practice? Typically, you set the GMT hand to your home time and then adjust the main hands to reflect the local time of your current location. If your watch also features a rotating bezel, you can even track a third time zone with a bit of simple mental calculation. It’s an elegant, clever, and genuinely useful complication for anyone who straddles multiple time zones.


A few standout GMT watches

There’s no shortage of contenders, but a few models deserve special mention.


Rolex GMT-Master II

Few watches capture the romance of jet-age travel quite like the Rolex GMT-Master II. Today’s model carries the same pioneering spirit as its 1950s ancestor, but it’s now wrapped in Rolex’s latest technical wizardry – from the bulletproof Oyster case to the bidirectional Cerachrom bezel that rotates with that deeply satisfying Rolex click.

Modern icons such as the ‘Pepsi’ and ‘Batman’ are instantly recognisable and remain among the most desirable watches across generations. The GMT-Master II features an independently adjustable local hour hand – a true GMT – allowing the wearer to adjust it in one-hour increments without ever stopping the movement.

rolex watch gmt master
Image source: Rolex

Seiko SSK035

If the Rolex GMT-Master II is the business-class icon, the Seiko SSK035 is the people’s champion of GMT watches. Part of Seiko’s 5 Sports collection, it’s robust yet accessible – the kind of watch that feels just as at home in an airport lounge as it does on a hiking trail. The SSK035 brings classic Seiko diver DNA to the GMT table, with a bold steel case, luminous indices, and a rotating 24-hour bezel that’s pure functionality.

At this price point, you might expect compromises in performance – but not here. Inside beats Seiko’s 4R34 automatic movement, a proper mechanical GMT at a fraction of the cost of its Swiss counterparts. The independently adjustable 24-hour hand makes it a true GMT, and the overall package punches far above its weight. The value proposition is frankly absurd: a no-nonsense, go-anywhere tool watch that proves you don’t need a first-class ticket to wear a serious GMT.

gmt seiko watch
Image source: Seiko

Tudor Black Bay GMT

Sharing its DNA with Rolex’s GMT-Master, the Tudor Black Bay GMT offers much of the same capability but with its own distinctly Tudor identity. The watch’s red and blue aluminium bezel pays homage to mid-century aviation glamour, while the snowflake hands and domed opaline black dial give it a purposeful, tool watch aesthetic.

Inside ticks Tudor’s MT5652 calibre – a COSC-certified movement with a 70-hour power reserve and true GMT function. Whether paired with a riveted steel bracelet or a soft fabric strap, the Black Bay GMT balances robustness with style in that uniquely Tudor way.

Tudor Black Bay GMT

Farer GMT Lander IV

This one’s the wildcard of the GMT showcase. British microbrand Farer has built a reputation for injecting colour, charm, and individuality into classic watchmaking – and the Lander IV might just be its defining piece. The dial is a rich teal, alive with Farer’s trademark layering of tone and texture, complemented by applied indices and a burnt orange GMT hand that cuts confidently across the dial.

Unlike the others here, its power comes from a third-party movement – the reliable Sellita SW330-2 – offering a 56-hour power reserve and caller GMT functionality for tracking a second time zone. What truly earns the Lander IV its place on this list is its sheer personality. It’s a watch that radiates optimism and adventure, the kind of proper travel companion that makes you smile every single time you glance at your wrist.


Final thoughts

In a world where our phones can tell us the time anywhere, it’s fair to ask: why bother with a GMT? The answer is simple. GMT watches offer a tactile, elegant solution to a modern problem – as well as the fact your phone won’t tell you what time it is back home when abroad!

A good GMT blends design and purpose. Readability is key – that extra hand should stand out, often in a bright colour or arrow-tipped design that makes it easy to track another time zone at a glance. Under the hood, choosing between a true traveller GMT or a caller GMT depends on your needs – frequent flyers will appreciate the convenience of the former. 

From the pioneering Rolex GMT watch of the 1950s to today’s accessible Seiko GMTs, the complication has remained a favourite among professionals and enthusiasts alike. 

So, next time you have your GMT on and board a plane or plan a call with colleagues halfway across the globe, glance at your wrist. That extra hand ticking away isn’t just marking hours – it’s keeping you connected to the world. And that’s why the GMT wristwatch will always be the ultimate travel companion.