The Tudor Black Bay GMT, reference 79830RB, is an intriguing model that blends Tudor’s heritage with modern watchmaking. It was introduced at Baselworld in 2018 and quickly gained attention for its compelling design, which includes the iconic "Pepsi" bezel—red and blue like the classic Rolex GMT-Master. This watch is one of the most popular models in the Black Bay line, known for its unique styling, strong technical specs, and affordability in comparison to similar luxury GMT models.

Here's a closer look at its development and features:

Design and Aesthetics

• The Black Bay GMT stands out with its two-tone bezel, made of aluminum, which displays 24-hour increments for dual time zones. This choice of colors (red for daytime and blue for nighttime) harkens back to the iconic Rolex GMT-Master, providing a vintage feel while still keeping Tudor's distinct identity.

• The 41mm case is slightly larger than other Black Bay models, giving it a robust presence on the wrist. It also incorporates the "snowflake" hands, a Tudor hallmark that originated with the brand's vintage dive watches.

• The dial is matte black with white applied markers, ensuring great legibility. The hour markers are filled with luminescent material for enhanced readability in low-light conditions.

Technical Specs and Movements

• The Black Bay GMT is powered by Tudor's in-house automatic caliber MT5652, developed specifically for this model. This movement offers a "true GMT" function, meaning the local hour hand can be independently adjusted without stopping the watch. This feature is ideal for travelers, allowing them to set the local time quickly.

• The MT5652 is chronometer-certified by the COSC, ensuring high accuracy and reliability. It has an impressive power reserve of around 70 hours, and it’s designed with a silicon balance spring, making it more resistant to magnetic fields.

Model Specifics:

Watch and Tudor box. Watch has been professionally refinished and is in like-new condition.