Mirabel GMT - Blue
Mirabel GMT - Blue
Mirabel GMT - Blue
Mirabel GMT - Blue
Mirabel GMT - Blue
Mirabel GMT - Blue
Mirabel GMT - Blue
Mirabel GMT - Blue
Mirabel GMT - Blue
Mirabel GMT - Blue

Mirabel GMT - Blue

$960.00
/
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With its unique ability to track two time zones simultaneously, the GMT watch has been a collector’s favorite since its introduction in the 1950s. The Mirabel reimagines this complication—typically found in sportier designs—and brings it into the realm of classic dress watches. The result? A GMT timepiece like no other—or, if you will, a dress watch with a party trick.

Colorway: Blue REF. 4004-A

Specifications

  • 316L Stainless Steel C-Shaped Case
  • Automatic "True GMT" Miyota 9075 (No Battery Required)
  • Boxed Sapphire Crystal (AR Coated)
  • Enamel Painted Sector Dial with Polished Applied Numerals
  • French Baranil Leather Strap with Quick-Release springbars
  • Cabochon Pilot Crown
  • Faceted Hands with Capped Seconds Hand
  • “World-Timer” Caseback with Hand-Painted Enamel Centerpiece
  • Water Resistance: 50 Meters | 165 Feet

Dimensions

  • Case Size: 37.5mm (Diameter) X 43.5mm (Lug To Lug)
  • Lug Width: 20mm
  • Thickness: 10mm (12mm with Boxed Crystal)
  • French Baranil Leather: 125/75mm

Instructions for the Miyota 9075 GMT feature: Read Now

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A Dress Watch With a Party Trick

Héron Mirabel GMT

“It’s not the martini, this watch’s got four hands!”

The “dress watch” has long been a cornerstone of high-end watchmaking, gracing the catalogs of brands like Patek Philippe and Longines. These formal timepieces, from simple three-handers to intricate high-complication perpetual calendars, have captured the imagination of collectors for decades.

With the Mirabel, we reimagine the GMT complication—often seen in sportier aviator designs—and bring it into the realm of dress watches. The result? A GMT timepiece like no other, or, if you will, a dress watch with a party trick.

Engineered for the cockpit, Dressed For The Cocktail

Reimagining the Pilot Watch

Despite its refined appearance, the Mirabel draws from classic aviation and military tool watches. The alpha hands are faceted and high-polished, (even heat-blued on the white dial)—echoing pilot watch designs with a luxurious twist. The diamond-shaped crown, inspired by early flieger designs, is upgraded with a cabochon-style insert for added elegance. A crosshair sector dial nods to mid-century instrument watches, reinterpreted with a glossy enamel finish and applied Roman numerals. These utilitarian cues are elevated with premium details, blending rugged inspiration with dress-watch sophistication.

Handcrafted Baranil Leather Strap

To ensure the Mirabel had a strap worthy of a true dress watch, we sourced a premium Baranil leather strap, crafted to Héron’s exact specifications. Every detail was carefully considered to complement the elegance and refinement of the Mirabel, resulting in a strap that is both luxurious and durable.

Made from Baranil calfskin leather sourced from Tanneries Haas in France, the strap offers a supple yet structured feel, with a fine grain that catches light beautifully. Hand-stitched with linen thread and finished with sealed edges for longevity, it pairs seamlessly with the Mirabel—completing the watch with both comfort and refinement.

Discover Haas®

The "world-Timer" Caseback

No After-thoughts

Staying true to Héron's DNA, the Mirabel features a beautifully decorated solid steel caseback. Inspired by Art Deco design, it displays a GMT world timer with each hour corresponding to a city representing its time zone—a tribute to the golden age of travel.

At the center, an enamel-painted centerpiece elegantly separates daytime and nighttime on the world timer, adding a vibrant and functional touch to the flourished design. A perlage finish is hidden inside the caseback for the watchmaker's pleasure.

Overall rating: 4.8461537 / 5 from 52 reviews.

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Review highlights

Reviews

Mirabel GMT - New York Edition Is Excellent

"Picked this up at Windup NYC because--just look at it! Lovely proportions, monochrome aesthetic and full lume dial. Even the strap is very high quality. Put it on the time grapher and it runs at -1spd out of the box! Only thing i'd say is that I wish the lume on the dial stayed brighter longer...but it still lasts all night. I'll be back for other models for sure!"

— Michael B. (4/5)

Windup NYC limited edition

"Purchased the limited edition GMT at Windup NYC October 2026. Did not come to NYC to buy a Heron but in person the dial is exquisite and sharp. The colors do represent NYC and the blue GMT arm pops. Will buy more Heron’s. They are just too good."

— A. G. (5/5)

Excellent value and very responsive customer service

"Upon receiving the confirmation that my Mirabel was going to ship, I asked if it was possible to have it ship a bit faster so I could use the GMT on my vacation. It wasn't urgent, and if they said no, I would have been perfectly fine with that. However they kindly expedited my shipment getting it to me days before my departure date. Really wasn't an emergency, but they took it upon themselves to do more and turn me into a Heron devotee! Also the watch itself is really quite nice. I love the high contrast applied numerals, the excellent finishing, and supple strap. I look forward to wearing it daily on my vacation to Portugal!"

— Tim D. (5/5)

Even Better on the Wrist!

"I recently received my Heron Mirabel GMT and I could not be happier with my purchase. The watch is extremely well made and finished. It looked beautiful in the photos and videos that I saw but, frankly, it looks much, much better on the wrist. This is a superior timepiece."

— Shelton D. (5/5)

When You Just Know

"It's hard to believe that my first experience with Héron goes back almost exactly 2 years at the inaugural Toronto Timepiece Show when I had the opportunity to try on their Mirabel GMT. I immediately liked what I saw but as soon as it was on my wrist there was nothing further for me to consider. It is a perfectly executed classic design, and I would have purchased it on the spot if I could. Little did I know that it was just the prototype and I'd have to wait while it went through further refinements and tweaks which ultimately made it even better. It has now been almost a year that I've had it and it still blows me away every time it's on my wrist. WYKYK!"

— Vic P. (5/5)

My first Heron, not my last

"It was worth the wait, my first Heron. Good quality for the price, nice design, perfect fit. I look forward ordering my second Heron soon!"

— Errol K. (5/5)

Beautiful Watch

"I’ve had this white dial version for a couple months now and it has become a regular part of my rotation. The combination of the dial, with that GMT hand, and case shape is quite stunning. It wears well on both a strap and mesh bracelet. This one is definitely a keeper."

— JW (5/5)

A unique and elegant Masterpiece

"Amazing watch: size 8/10, build quality 8/10, bezel design 11/10. Definitely a conversation starter watch to use for special occasions or every once in a while, like a supercar."

— Giorgio R. (5/5)

Elegant, Timeless, Blue

"After some delivery issues with the Mirabel Firehorse, I was presented with the opportunity to purchase this model which I had been looking forward to since the launch but didn’t manage to buy it in time. Definitely did not let the opportunity pass and completed the purchase thanks to Adam and the Héron team, mega job. The watch definitely characterized by it’s attention to detail, good size for my small wrist. Very elegant, timeless and the color is perfect, in my opinion the best in the lineup followed by the the Cigar Club (excluding of course the Masterpiece that the Firehorse is)."

— Giorgio R. (5/5)

Brilliant execution of a classic GMT

"This piece is just exceptionally well done in every respect. Classic Sector dial in a warm salmon colour with a functional party trick - the whole dial illuminates when ambient light drops. Finishing of all visible components - case and dial, sits comfortably above its price point. Even without useful complication of a true traveler's GMT, this watch would be a hit. With that complication, it represents one of the best value purchases on the market."

— Roger P. (5/5)

Q&A

AS FEATURED ON

WATCH GECKO

"Heron continues to prove that independent watchmaking still has room to surprise."

READ THE ARTICLE

Oracle Time

"An accessible dress watch begging for the low light of a cocktail bar— It’s hard not to see the sheer value here."

READ THE ARTICLE

MAINSPRING

"At the pace at which Héron is going and looking at the incredible value they packed into the Mirabel GMT, I’m starting to wonder if they’re into charitable horology?"

READ THE ARTICLE

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