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Tudor Black Bay S&G 41mm Stainless Steel
Ref. 79733N
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Stepping up in Tudor's range
The Black Bay S&G arrived at Baselworld 2017 as Tudor's clearest statement about what the Black Bay could become when its mid-century DNA was taken seriously rather than loosely referenced. The matte black dial with gold indices and minute track is a direct revival of the gilt dials that defined tool watches of the 1950s and 1960s, and Tudor reinforced that intention by using solid 18ct yellow gold for the bezel and end links rather than plating — the crown and inner bracelet links are gold-capped to a thickness of 0.3mm to 0.6mm, which is meaningfully more durable than surface treatment. The MT5612 movement inside is COSC-certified, built with a silicon balance spring that shrugs off magnetic fields, and carries a 70-hour power reserve — useful if the watch rotates off the wrist for a long weekend. At 14.8mm thick the case is substantial, but tapered lugs and a flat caseback pull it closer to the wrist than the numbers suggest, and it will slide under a dress cuff more readily than most watches of this rating and build. The riveted two-tone bracelet, with its stepped faux-rivet flanks echoing 1950s architecture, fastens via a deployant clasp with ceramic ball bearings and micro-adjustments built into the shell — a small detail that matters on a bracelet worn daily across changing temperatures.
- Reference
- 79733N
- Brand
- Tudor
- Collection
- Black Bay
- Case size
- 41mm
- Case thickness
- 14.8mm
- Lug width
- 22mm
- Case material
- Two-tone
- Case shape
- Round
- Dial
- Black
- Crystal
- Sapphire
- Bezel
- Unidirectional rotating
- Movement
- Automatic
- Calibre
- MT5612
- Functions
- Date
- Water resistance
- 200m
- Bracelet / strap
- Stainless steel bracelet
- Strap colour
- Two-tone
- Clasp
- Deployant clasp
- Lume
- Luminous
- Condition
- Pre-owned
- Retailer
- Mappin & Webb
Additional specifications
- Lug-to-lug
- 50mm
- 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 7 collections
This watch appears in the Tudor Black Bay range (26), Back in Stock (4,405), Automatic Watches (1,634), Sports Watches (729), Dive Watches (521), Two-Tone Watches (446) and Pre-Owned, Ex-Display & Vintage Watches (326).
Temporarily out of stock
Mappin & Webb is not currently taking orders for this reference. Last listed as available on 8 October 2026. Stock is checked nightly and this page updates when it returns.
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
- 14.8mm thick, so it will not disappear under a cuff
Price history
This watch is currently at its lowest recorded price. It reached £3,850 on 17 September. Prices are checked every day, and we record any changes.
Tudor Black Bay S&G alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | 79733N | WBP2151.FT6199 | SMARINECHRONO-BL-B |
|---|---|---|---|
| Price | £3,550 | £3,360 | £3,996 |
| Case size | 41mm | 40mm | 43mm |
| Water resistance | 200m | 200m | 200m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Stainless steel bracelet | Rubber strap | Rubber strap |
| Power reserve | 70 hours | 38 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 50mm, 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 unisex, and at this size it suits any wrist that takes the dimensions.
Has the price changed recently?
It's currently at its lowest recorded price since we began tracking it. It's ranged between £3,550 and £3,850, today it's £3,550.
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