Tudor
Tudor Black Bay One Only Watch 2015 7923
The Tudor Black Bay One Only Watch 2015 (reference 7923) is a 41 mm stainless Steel watch with a black dial. It runs on the automatic caliber ETA 2824-2. It was introduced in 2015.
Specifications
Case
- Reference
- 7923
- Collection
- Black Bay
- Case size
- 41 mm
- Case material
- Stainless Steel
- Case shape
- Round
- Crystal
- Sapphire
- Bracelet / strap
- Straight-end bracelet
Dial and bezel
- Dial
- Black
- Bezel
- Rotating 0-60 with red triangle
Movement
- Movement
- Automatic
- Caliber
- ETA 2824-2
Production
- Production
- 2015 – today (limited)
Dial versions
This reference was made with these dials and finishes.
7923 Black
7923-001
Gilt plots and pencil hands; red depth rating
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 |
|---|---|---|---|---|---|
| 7923 (This watch) | 41 mm | Stainless Steel | Black | ETA 2824-2 | 2015– |
| 79310N | 39 mm | Steel | Yellow | MT5813 | 2025– |
| 7939G1A0NRU | 39 mm | Stainless Steel | Black | MT5450-U | 2024– |
| 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 One Only Watch 2015 7923?
- The Tudor Black Bay One Only Watch 2015 7923 has a 41 mm case.
- What movement does the Tudor Black Bay One Only Watch 2015 7923 use?
- It uses the automatic caliber ETA 2824-2.
- Is the Tudor Black Bay One Only Watch 2015 7923 still in production?
- Limited.
- When did the Tudor Black Bay One Only Watch 2015 7923 come out?
- It was introduced in 2015.
- What is the Tudor Black Bay One Only Watch 2015 7923 made of?
- The case is stainless Steel. Bracelet or strap: Straight-end bracelet.
Catalog facts checked October 2026.