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Last checked Oct 26, 2026
View on Héron’s site ↗From Héron
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: Brown REF. 4003-A Specifications 316L Stainless Steel C-Shaped Case with Gold PVD Coating 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: 10 (12mm with Boxed Crystal) French Baranil Leather: 125/75mm
Specifications
Details and photos come from Héron’s website, last checked Oct 26, 2026. Specs were read automatically and may contain mistakes.
Case
- Diameter
- 37.5 mm
- Lug-to-lug
- Not listed
- Thickness
- Not listed
- Thickness incl. crystal
- Not listed
- Lug width
- 20 mm
- Material
- Not listed
Movement
- Type
- Automatic
- Caliber
- Miyota 9075
- Power reserve
- Not listed
- Functions
- Not listed
Crystal and bezel
- Crystal
- Sapphire
- Bezel
- Not listed
Water resistance
- Rated to
- 50 m
Dial and lume
- Dial
- Not listed
- Lume
- Not listed
Strap
- Strap
- Not listed
Every spec Héron lists
- Colorway
- Brown REF. 4003-A
- Case Size
- 37.5mm (Diameter) X 43.5mm (Lug To Lug)
- Lug Width
- 20mm
- Thickness
- 10 (12mm with Boxed Crystal)
- Water Resistance
- 50 Meters | 165 Feet
- French Baranil Leather
- 125/75mm
- We’ve kept things simple
- the listed price is the only price. No additional tariffs or surprise charges — just a seamless purchase from checkout to delivery.
- Instructions for the Miyota 9075 GMT feature
- Read Now
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