Introduction
Introduced in 2018, the Black Bay GMT expanded Tudor's hugely successful Black Bay collection by adding one of the brand's most practical complications. Combining the vintage-inspired design language established by the Black Bay with a true traveller's GMT movement, the model quickly became one of Tudor's most popular modern sports watches. Its burgundy and blue anodised aluminium bezel pays tribute to the iconic "Pepsi" GMT watches of the past, while the in-house COSC-certified calibre MT5652 provides independently adjustable local-hour functionality for effortless travel.
Offered here is the desirable opaline dial variant, introduced at Watches & Wonders in 2023. The crisp white dial transforms the character of the watch, creating greater contrast with the signature burgundy and blue bezel while giving the Black Bay GMT a brighter, more contemporary appearance. Paired with Tudor's robust 41mm stainless steel case and rivet-style bracelet, it is one of the most versatile modern GMT watches available.
Loupe This Scorecard
Grade
M 10
Status
Vetted & Approved
Included
Inner and outer boxes (No Guarantee Card)
Est. value range
$2,000 – $3,000
The Details
Brand
Tudor
Dimensions
41mm
Model
Black Bay GMT
Movement
Automatic Tudor calibre MT5652 (COSC)
Reference
79830RB
Bracelet
Steel bracelet
Year
Circa 2023
Condition
New
Material
Stainless steel
Included
Inner and outer boxes
Dial Color
Opaline white

THE DIAL
The opaline white dial offers a fresh interpretation of the Black Bay GMT, providing exceptional contrast against the black surrounds, gilt accents and bright red GMT hand. Combined with the burgundy and blue aluminium bezel, it creates one of the most distinctive and legible modern GMT displays in Tudor's collection.

THE CONSTRUCTION
The 41mm stainless steel case combines the Black Bay collection's signature oversized crown, domed sapphire crystal and rivet-style bracelet with a bi-colour burgundy and blue anodised aluminium 24-hour bezel. Water-resistant to 200 metres, it remains every bit the capable tool watch while delivering unmistakable vintage-inspired styling.

TIMING MACHINE READOUT
This reading was taken (crown down) with a ONEOF Accuracy Boutique Edition timing machine at time of cataloging. It is provided as a courtesy only, and shall not be construed as a warranty or guarantee of any kind. Please refer to our terms and conditions of sale for more information.
Condition
Watch is in new condition in its original protective stickers. The bracelet is fitted with 10 links and fits approximately a 6¾” wrist. Watch comes with box only, there is no guarantee card. Box has some deterioration on the outer surfaces.
Our Perspective
The Black Bay GMT has become one of Tudor's defining modern sports watches by combining vintage-inspired design with a genuinely useful traveller's GMT complication. The addition of the opaline dial elevates the design further, creating a cleaner, more contemporary aesthetic that has quickly become one of the most sought-after versions of the reference.















