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Tudor Black Bay Chronograph 41mm Stainless Steel
Ref. M79360N-0002
The panda dial configuration — matte white opaline field, black sub-registers at three and nine — has a long association with motorsport chronographs, and Tudor's 2021 revision of the Black Bay Chrono earns that heritage rather than merely borrowing its aesthetic. The MT5813 at its heart was developed jointly with Breitling, sharing architecture with the B01, and brings a column-wheel, vertical clutch and silicon balance spring to a movement that is COSC-certified and runs for 70 hours between winds. That is serious engineering for a watch wearing Tudor's name rather than its parent's. The 2021 generation trimmed the case to 14.4mm — thinner than its predecessors without becoming slim — which matters because 41mm on a lug-to-lug of 49.9mm already demands something of a smaller wrist. The Snowflake hands and anodised aluminium tachymeter ring read as deliberately vintage without softening the watch into a retro exercise; it still looks ready to time something. At 183.2 grams on the riveted three-link bracelet, it announces itself on the wrist, and the clasp's micro-adjustment holes make fitting it properly straightforward rather than approximate.
- Reference
- M79360N-0002
- Brand
- Tudor
- Collection
- Black Bay
- Case size
- 41mm
- Case thickness
- 14.4mm
- Lug width
- 22mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- White
- Crystal
- Sapphire
- Bezel
- Fixed tachymeter
- Movement
- Automatic
- Calibre
- MT5813
- Functions
- Chronograph, Date, Small seconds, Tachymeter
- Water resistance
- 200m
- Bracelet / strap
- Stainless steel bracelet
- Strap colour
- Silver
- Clasp
- Folding clasp
- Lume
- Luminous
- Retailer
- Mappin & Webb
Additional specifications
- Lug-to-lug
- 49.9mm
- Power reserve
- 70 hours
Learn more about Tudor
Tudor exists because Hans Wilsdorf wanted to sell a Rolex to people who could not afford one. He registered the name in 1926 and relaunched it properly in 1946 as a separate company: Rolex cases, Rolex bracelets, Rolex crowns, but bought-in movements — usually ETA — at a fraction of the price.
For decades this made Tudor the practical choice for organisations buying in bulk. The French Marine Nationale issued Submariners to its divers. The US Navy tested them. Tudor's military history is arguably richer than Rolex's, because navies bought Tudors.
The watches developed their own identity regardless. The snowflake hands fitted to Submariners from 1969, specified by the French navy for legibility, became a signature the brand still uses. The Monte Carlo chronographs of the early 1970s, with their orange and blue dials, look nothing like anything Rolex made.
The brand withdrew from the US market in 1996 and spent a decade in relative obscurity before returning in 2013 with the Heritage Black Bay, which mined the archive rather than chasing modernity. It worked. Tudor now develops its own movements through a partnership with Kenissi, supplies calibres to Breitling, and holds METAS Master Chronometer certification — a technical position it never had when it was simply the affordable Rolex.
- 1926
- Hans Wilsdorf registers the Tudor name.
- 1946
- Montres Tudor SA is established as a separate company.
- 1969
- Snowflake hands appear on Submariners for the French navy.
- 2012
- The Black Bay revives the brand internationally.
- 2015
- The first in-house Tudor calibre is released.
Also in 6 collections
This watch appears in the Tudor Black Bay range (26), Stainless Steel Watches (3,546), Automatic Watches (1,867), Chronograph Watches (1,376), Sports Watches (860) and Dive Watches (619).
What the specifications mean
A mechanical watch built to be worn hard and got wet.
Strengths
- 200m water resistance, rated for actual diving
- Sapphire crystal, which resists scratching
- 70-hour reserve survives a weekend off the wrist
- Luminous hands and markers for low light
Worth knowing
- 14.4mm thick, so it will not disappear under a cuff
Tudor Black Bay alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | M79360N-0002 | ZO9594 | N1300.08B01.B01.R02 |
|---|---|---|---|
| Price | £3,950 | £3,799 | £3,375 |
| Case size | 41mm | 41mm | 40mm |
| Water resistance | 200m | 200m | 200m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Stainless steel bracelet | Rubber strap | Rubber strap |
| Power reserve | 70 hours | 44 hours | 41 hours |
| This watch | Closely matched |
|
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Yes. At 200m it is rated for swimming, snorkelling and recreational diving.
Water resistance explainedWill the glass scratch?
Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.
Sapphire, mineral and acrylic comparedDoes it need a battery?
No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.
Quartz, automatic and solar comparedHow long does it run for when it's not worn?
About 70 hours fully wound — enough to sit off the wrist over a weekend and still be running.
What size strap does it take?
22mm. Any strap of that width will fit, and on most modern watches quick-release bars make the swap a two-minute job with no tools.
Will it fit my wrist?
Lug-to-lug is 49.9mm, which suits wrists from roughly 16.5cm (6½ inches) upward.
Lug-to-lug decides fit more than case diameter does.
How to size a watch to your wristIs it a men's or women's watch?
Listed as men's.
Cheapest place to buy
Mappin & Webb is the only UK retailer we track stocking this reference, so there is nothing to compare it against today.
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