The Short Answer
Tudor just brought the Northflag back from a five-year absence, and this time it is a real GMT. Reference 9140G1A0U keeps the 40mm steel case and brushed black dial the original was known for, but swaps in caliber MT5652-U, a METAS-certified Master Chronometer movement with a flyer GMT function and a 65-hour power reserve. Price is EUR 5,050 (CHF 4,500), boutique-only, not limited.
The original Northflag launched in 2015 as the watch that introduced Tudor's first in-house movement to the world. It never sold especially well and was discontinued in 2021. Bringing it back as a GMT, rather than just reissuing the original spec, is Tudor betting the nameplate still has something to say.
The brushed black dial and monobloc ceramic hour markers are a direct carryover from the 2015 original, unchanged apart from the new GMT hand.
The watch photos in this article were generated with AI image tools, conditioned on real reference photography of the Tudor Northflag GMT so the case shape and dial layout are accurate to the real watch.
A Watch That Was Ahead of Its Own Story
The 2015 Northflag mattered more than it sold. It was the first Tudor to carry an in-house Kenissi-built movement, caliber MT5621, at a moment when Tudor was still mostly running ETA-based calibers across the rest of its catalog.
Six years in the catalog, then gone in 2021, with no direct replacement. Tudor moved its GMT ambitions into the Black Bay line instead, first with the Black Bay GMT in 2018 and later the smaller Black Bay 58 GMT. The Northflag name sat unused.
Why Revive It Now, and Why as a GMT
Bringing the Northflag back as a plain reissue would have been safe and forgettable. Turning it into a GMT gives Tudor a second GMT nameplate that is not just a smaller Black Bay, and it lets the brand put a fresh Master Chronometer movement into a design language collectors already associate with in-house engineering.
What Changed, What Did Not
The case stays close to the original: 40mm, 12.7mm thick, 48.8mm lug to lug, in brushed 904L-adjacent steel with polished accents and 100m water resistance. The dial keeps its brushed black finish and full-block Super-LumiNova markers.
The yellow GMT hand and seconds hand are the clearest visual break from the 2015 original, which ran a plain white seconds hand with no second time zone at all.
The New Movement: Caliber MT5652-U
Caliber MT5652-U is the same family used in Tudor's Black Bay GMT and Pro references: a flyer GMT, meaning the local hour hand jumps independently in one-hour steps while the 24-hour hand and fixed flange track home time. It runs at 28,800 vibrations per hour with a silicon hairspring and a 65-hour power reserve, and it carries full METAS Master Chronometer certification, tested for accuracy, power reserve, and resistance to magnetic fields up to 15,000 gauss.
The Bracelet
An H-shaped integrated steel bracelet with a T-Fit rapid micro-adjust clasp replaces the older Northflag's more basic link design, matching the tool-focused feel Tudor has built into its recent sports references.
The T-Fit clasp's rapid micro-adjust lets the bracelet flex with wrist swell over the course of a day, a small detail borrowed from Tudor's diving-watch lineage.
Where It Sits Against Tudor's Other GMTs
At 40mm and 12.7mm thick, the Northflag GMT sits between the Black Bay 58 GMT and the standard Black Bay GMT in case size.
The Honest Trade-Off
The Northflag GMT is more expensive than both Black Bay GMTs despite offering a shorter power reserve and no rotating bezel to track a third time zone. What it buys instead is the fixed 24-hour flange look and the Northflag name's specific design history, a trade that appeals more to someone who already wants this dial over the Black Bay's than to someone comparison-shopping purely on spec.
Buying Pre-Owned
The Northflag GMT is brand new to the market, so there is no pre-owned track record yet. The original 2015 to 2021 Northflag has traded quietly on the secondary market for years, usually below its original retail, since it never built the collector heat of Tudor's Black Bay line. Whether the GMT version follows that same pattern or benefits from the renewed attention will take a year or two to show up in the data.
A new-to-market reference like this has no service history yet, worth remembering before assuming parts and support will be as straightforward as Tudor's higher-volume Black Bay line.
FAQ
What is the reference number for the new Tudor Northflag GMT?
The new Northflag GMT is reference 9140G1A0U, a 40mm steel case with caliber MT5652-U inside.
How is the Northflag GMT different from the original Northflag?
The original 2015 to 2021 Northflag had no second time zone. The new version adds a flyer GMT function via caliber MT5652-U, along with a new H-shaped bracelet, while keeping the same 40mm case size and dial design language.
What movement does the Tudor Northflag GMT use?
It runs caliber MT5652-U, a Kenissi-built, METAS Master Chronometer certified movement with a silicon hairspring, 65-hour power reserve, and a flyer GMT function with independently adjustable local hour hand.
How much does the Tudor Northflag GMT cost?
Tudor lists it at EUR 5,050 (CHF 4,500), sold through Tudor boutiques as a permanent, non-limited catalog piece.
Is the Northflag GMT better than the Black Bay GMT?
Not strictly. The Black Bay GMT and Black Bay 58 GMT both offer a rotating 24-hour bezel for a true third time zone and a longer 70-hour power reserve, at a lower price than the Northflag GMT. The Northflag trades that spec advantage for its own dial design and fixed-flange GMT layout.
Related Reading
- Flyer vs Caller GMT: Two Watches Wearing the Same Name, Built for Opposite Lives
- Tudor Black Bay 58 GMT (2026): The Mid-Size Travel Watch That Beats the Rolex GMT Waitlist
- GMT Function Explained: How a True GMT Actually Tracks a Second Time Zone
- The Best GMT and Travel Watches to Buy in 2026: A Working Dealer's Picks