Tudor Black Bay GMT Pepsi
About This Watch
The Tudor Black Bay GMT burst onto the scene in 2018 and immediately became one of the most talked-about watches in the industry, offering a true GMT function — independently adjustable local hour hand — at a price point that was previously unthinkable. The red and blue "Pepsi" bezel, rendered in anodized aluminum, pays homage to the iconic Rolex GMT-Master colorway but with Tudor's own distinctly angular snowflake hands and shield logo giving it its own identity. The MT5652 manufacture caliber is purpose-built for the GMT function, not a modified time-only movement, which means the additional complication does not compromise reliability or servicing simplicity. With COSC certification and a 70-hour power reserve, the movement punches well above the watch's price class. The bidirectional rotating bezel allows tracking of a third time zone beyond the two displayed by the GMT hands, making this a genuinely functional travel watch. At its MSRP of just over $4,000, the Black Bay GMT undercuts the Rolex GMT-Master II by a factor of three while offering comparable core functionality and manufacture movement quality. The market has responded accordingly — this is one of Tudor's most popular models and has maintained secondary market prices at or above retail since launch. For frequent travelers seeking a true GMT watch without the Rolex premium, this is the definitive choice.
In-Depth Review
# Tudor Black Bay GMT Pepsi Editorial
When Tudor introduced the Black Bay GMT in 2018, the brand demonstrated a clear understanding of what modern watch enthusiasts actually wanted: a capable dual-time instrument without the premium pricing of a Rolex equivalent. The reference M79830RB uses the in-house MT5652 caliber, a respectable movement with 70 hours of power reserve and 26 jewels that handles GMT functions with reliable precision. The 41mm stainless steel case strikes an intentional balance—large enough for legibility and wrist presence, yet proportioned with the restraint that defines Tudor's design philosophy. The bidirectional bezel with its iconic Pepsi red and blue anodized aluminum insert recalls vintage sports watches while remaining thoroughly contemporary, and the sapphire crystal with 200 meters of water resistance ensures this is a tool watch, not merely a styling exercise.
The Black Bay GMT Pepsi appeals to a specific owner: the professional traveler or enthusiast who values substance over status symbols, someone who wants reliable GMT functionality without waiting years on a Rolex waiting list or paying secondary market premiums. It works equally well for the collector building a versatile rotation or the watch enthusiast seeking entry into Tudor's increasingly refined catalog.
In the mid-range GMT segment around four thousand dollars, this watch faces legitimate competition. The Seiko Prospex GMT (SPB199) offers exceptional value and robust Seiko reliability at roughly one-third the price, while the Longines Hydroconquest GMT presents a more dressy alternative with similar positioning. However, Tudor's in-house movement, heritage cachet, and aesthetic refinement justify its asking price for those seeking a complete package.
Specifications
Movement
| Movement Type | Automatic |
|---|---|
| Caliber | MT5652 |
| Power Reserve | 70 hours |
| Frequency | 28,800 vph |
| Jewels | 26 |
Case
| Case Diameter | 41.0mm |
|---|---|
| Case Thickness | 14.8mm |
| Case Material | Stainless Steel |
| Crystal | Sapphire |
| Bezel | Bidirectional rotating, anodized aluminum red/blue insert |
| Dial Color | Black |
| Lug Width | 22mm |
| Lug-to-Lug | 50.0mm |
Features
| Water Resistance | 200m / 656ft |
|---|---|
| Bracelet/Strap | Stainless steel riveted bracelet |
| Clasp | Folding clasp with safety lock |
| Weight | 170g |
| Complications |