Tudor
Tudor Black Bay 58 GMT 7939G1A0NRU
“Coke”
The Tudor Black Bay 58 GMT (reference 7939G1A0NRU) is a 39 mm stainless Steel watch with a black dial. It runs on the automatic caliber MT5450-U with a 65-hour power reserve and is water resistant to 200 m. It was introduced in 2024 and is still in production.
Specifications
Case
- Reference
- 7939G1A0NRU
- Nickname
- Coke
- Collection
- Black Bay
- Case size
- 39 mm
- Thickness
- 12.8 mm
- Case material
- Stainless Steel
- Case shape
- Round
- Crystal
- Domed sapphire
- Water resistance
- 200 m
- Bracelet / strap
- Stainless Steel
Dial and bezel
- Dial
- Black
- Bezel
- 24-hour bidirectional rotatable, steel with black and burgundy anodised aluminium insert
Movement
- Movement
- Automatic
- Caliber
- MT5450-U
- Power reserve
- 65 hours
- Functions
- GMT
Production
- Production
- 2024 – today (current)
Dial versions
This reference was made with these dials and finishes.
7939G1A0NRU Coke Domed, gilt applied markers #0001
M7939G1A0NRU-0001
Domed, gilt applied markers · “Coke”
7939G1A0NRU Coke Domed, gilt applied markers #0002
M7939G1A0NRU-0002
Domed, gilt applied markers · “Coke”
7939G1A0NRU Coke Domed, gilt applied markers #0003
M7939G1A0NRU-0003
Domed, gilt applied markers · “Coke”
How it compares within the Black Bay family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 7939G1A0NRU (This watch) | 39 mm | Stainless Steel | Black | MT5450-U | 2024– |
| 79310N | 39 mm | Steel | Yellow | MT5813 | 2025– |
| 79360N | 41 mm | Steel | — | MT5813 | 2021– |
| 7941A1A0NU | 41 mm | Stainless Steel | Black | MT5602-U | 2023– |
| 79600 | 31 mm | Stainless Steel | — | MT5201 | 2023– |
| 79640 | 36 mm | Stainless Steel | — | MT5400 | 2023– |
| 79660 | 39 mm | Stainless Steel | — | MT5602 | 2023– |
| 79680 | 41 mm | Stainless Steel | — | MT5601 | 2023– |
| 79833MN | 41 mm | Steel | Black | MT5652 | 2022– |
About the Black Bay family
The Black Bay was introduced in 2012 as the Heritage Black Bay, a dive watch drawing on Tudor's 1950s Submariners with a domed crystal, a large crown without guards and snowflake hands. It quickly grew into Tudor's main family.
The first models used an ETA caliber; from 2016 the Black Bay moved to the in-house MT5602 and related calibers. The family includes the 39 mm Black Bay Fifty-Eight of 2018, the GMT, the Chrono, Bronze versions, the Pro, the smaller Black Bay 54 and Master Chronometer models from 2023. Dealers note the size, bezel colour, caliber generation and bracelet or strap, since many versions share the same look.
Quick answers
- What size is the Tudor Black Bay 58 GMT 7939G1A0NRU?
- The Tudor Black Bay 58 GMT 7939G1A0NRU has a 39 mm case, 12.8 mm thick.
- What movement does the Tudor Black Bay 58 GMT 7939G1A0NRU use?
- It uses the automatic caliber MT5450-U, with a 65-hour power reserve.
- How water resistant is the Tudor Black Bay 58 GMT 7939G1A0NRU?
- It is water resistant to 200 metres.
- Is the Tudor Black Bay 58 GMT 7939G1A0NRU still in production?
- Yes, it is a current reference.
- When did the Tudor Black Bay 58 GMT 7939G1A0NRU come out?
- It was introduced in 2024.
- What is the Tudor Black Bay 58 GMT 7939G1A0NRU made of?
- The case is stainless Steel. Bracelet or strap: Stainless Steel.
- What is the Tudor Black Bay 58 GMT 7939G1A0NRU nicknamed?
- Dealers and collectors call it the “Coke”.
Catalog facts checked October 2026.