Tudor Black Bay 54 79000B-0002
Ref. 79000B-0002 · Blue dial · In production
- Case37 mm
- Thick11.2 mm
- Water res.200 m
- MovementAutomatic
- CrystalSapphire
Tudor Black Bay 54 79000B-0002 size, specs and price at a glance
The Tudor Black Bay 54 79000B-0002 is 37 mm wide and 11.2 mm thick. Tudor does not publish its lug-to-lug length. It takes 20 mm straps and ships on a rubber strap. Inside is the MT5400 automatic calibre, water resistant to 200 m.
Strap shopping? See our Tudor lug width chart.
Overview
The Tudor 79000B-0002 is a diver watch from the Black Bay 54 collection. It has a 37 mm stainless steel case, 11.2 mm thick. Tudor lists the dial as blue. Inside is an automatic movement (calibre MT5400) with 70 h of power reserve. You also get 200 m water resistance, a sapphire crystal and a rubber strap.
Who it suits
- Wrists of roughly 14.7–16.6 cm (5.8–6.5 in), by our Watch Finder sizing guide
- Swimming, snorkelling and diving
Strengths
- Sapphire crystal resists scratches
- 200 m water resistance
- Screw-down crown helps keep water out
- 70 h power reserve survives a weekend off the wrist
Written by Watch.co from the published specs below. These are not owner reviews.
Full specifications
Case
| Case diameter | 37 mm | tudorwatch.com · 3 Nov 2026 |
|---|---|---|
| Thickness | 11.2 mm | tudorwatch.com · 3 Nov 2026 |
| Lug-to-lug | Not published by Tudor | |
| Case material | Stainless steel | tudorwatch.com · 3 Nov 2026 |
| Crystal | Sapphire | tudorwatch.com · 3 Nov 2026 |
| Bezel | Unidirectional rotating | tudorwatch.com · 3 Nov 2026 |
| Water resistance | 200 m | tudorwatch.com · 3 Nov 2026 |
| Screw-down crown | Yes | tudorwatch.com · 3 Nov 2026 |
Dial
| Dial colour | Blue | tudorwatch.com · 3 Nov 2026 |
|---|
Movement
| Movement type | Automatic | tudorwatch.com · 3 Nov 2026 |
|---|---|---|
| Calibre | MT5400 | tudorwatch.com · 3 Nov 2026 |
| Power reserve | 70 h | tudorwatch.com · 3 Nov 2026 |
| Certification | COSC chronometer | tudorwatch.com · 3 Nov 2026 |
Strap / Bracelet
| Bracelet / strap | Rubber strap | tudorwatch.com · 3 Nov 2026 |
|---|---|---|
| Lug width | 20 mm | tudorwatch.com · 3 Nov 2026 |
Other
| Production status | In production | tudorwatch.com · 3 Nov 2026 |
|---|---|---|
| Style (our classification) | Diver | our classification |
Specs are summarised in our own words from the brand's product page. Each row links its source and the date we checked it. Fields we haven't verified are left out rather than guessed.
Variants with the same specs
Same case, movement and bracelet or strap; typically a different dial or finish.
More in Black Bay 54
Similar alternatives
Picked with Watch Finder's style tags and sizing.
Questions about the Tudor Black Bay 54 79000B-0002
How big is the Tudor Black Bay 54 79000B-0002?
The case is 37 mm wide, 11.2 mm thick.
What movement does the Tudor Black Bay 54 79000B-0002 use?
It uses the MT5400 calibre, a automatic movement with 70 h of power reserve.
Can I swim with the Tudor Black Bay 54 79000B-0002?
Yes. It is rated to 200 m.
Will the Tudor Black Bay 54 79000B-0002 fit my wrist?
By our sizing guide it sits best on wrists of about 14.7–16.6 cm (5.8–6.5 in). Use the fit checker on this page to test your own wrist.
Watch.co is independent and not affiliated with any brand. Brand names are used only to identify products.