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Blancpain Fifty Fathoms Automatique 42.3mm Mens Watch Black
Ref. 5010-12B30-NABA
The 42.30 mm case is satin-brushed Grade 23 titanium, kept to 14.30 mm in thickness and fitted with a unidirectional rotating bezel topped in sapphire. The sunburst black dial carries luminous Arabic numerals and baton markers alongside a date window between four and five o'clock, with the exhibition caseback revealing the in-house Calibre 1315 beneath. That movement runs at 28,800 vph with a silicon balance spring and draws 120 hours of power reserve from three series-coupled barrels. A heavy-duty black NATO strap with a titanium pin buckle completes the watch.
- Reference
- 5010-12B30-NABA
- Brand
- Blancpain
- Collection
- coupled barrelsFrequency: 4
- Case size
- 42.3mm
- Case thickness
- 14.30mm
- Case material
- Titanium
- Case shape
- Round
- Dial
- Black
- Crystal
- Sapphire
- Bezel
- Unidirectional rotating
- Movement
- Automatic
- Calibre
- 1315
- Functions
- Date
- Water resistance
- 300m
- Bracelet / strap
- Titanium bracelet
- Strap colour
- Black
- Clasp
- Buckle
- Lume
- Luminous
- Retailer
- Mappin & Webb
Additional specifications
- Power reserve
- 120 hours
Learn more about Blancpain
Jehan-Jacques Blancpain registered as a watchmaker in Villeret in 1735, which makes Blancpain the oldest name in the industry by registration date. The dial still carries JB 1735.
The claim comes with an asterisk the house is candid about: production stopped during the quartz crisis. The name was dormant until Jean-Claude Biver and Jacques Piguet bought it in 1983 and relaunched it on a defiantly contrarian promise — there has never been a quartz Blancpain, and there never will be. In a market then convinced mechanical watchmaking was finished, this proved commercially astute as well as romantic.
The technical high-water mark of the modern era came in 1991 with the 1735 Grande Complication, which combined a tourbillon, perpetual calendar, moon phase, minute repeater, and split-seconds chronograph in one wristwatch.
Blancpain's other lasting contribution is the Fifty Fathoms of 1953, developed with French combat divers and predating the Submariner. It established the vocabulary of the dive watch — rotating bezel, high legibility, real water resistance — and remains the collection most buyers know.
The Swatch Group acquired the brand in 1992. The Villeret line continues the classical side of the house: round cases, double stepped bezels, and complications presented without ornament.
- 1735
- Jehan-Jacques Blancpain registers as a watchmaker in Villeret.
- 1953
- The Fifty Fathoms establishes the modern dive watch.
- 1983
- Jean-Claude Biver and Jacques Piguet revive the dormant brand.
- 1991
- The 1735 Grande Complication is released.
- 1992
- Acquired by the Swatch Group.
Also in 4 collections
This watch appears in Automatic Watches (1,540), Sports Watches (700), Dive Watches (503) and Titanium Watches (150).
Best of 2 retailers
What the specifications mean
A mechanical watch built to be worn hard and got wet.
Strengths
- 300m water resistance, rated for actual diving
- Sapphire crystal, which resists scratching
- 120-hour reserve survives a weekend off the wrist
- Luminous hands and markers for low light
Worth knowing
- 14.3mm thick, so it will not disappear under a cuff
Blancpain Fifty Fathoms Automatique alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | 5010-12B30-NABA | 1-36-13-04-91-34 | PAM01661 |
|---|---|---|---|
| Price | £15,500 | £14,800 | £13,100 |
| Case size | 42.3mm | 43.2mm | 44mm |
| Water resistance | 300m | 300m | 300m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Titanium bracelet | Fabric strap | Fabric strap |
| Power reserve | 120 hours | 100 hours | 72 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 300m 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 120 hours fully wound — enough to sit off the wrist over a weekend and still be running.
Is it a men's or women's watch?
Listed as men's.
Cheapest place to buy
Both Mappin & Webb and Goldsmiths list it at £15,500, so choose on delivery and warranty rather than price.
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