Kensington Watches
Patek Philippe Aquanaut 40mm Stainless Steel

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Patek Philippe

Patek Philippe Aquanaut 40mm Stainless Steel

Ref. 5167/1A-001

The Aquanaut arrived in 1997 as Patek Philippe's answer to a younger, more active wearer — less formal than the Nautilus, built to go in the water, but unmistakably from the same house. The 5167 succeeded the original reference 5065A a decade later, refining the proportions while keeping the rounded octagonal case and the embossed dial that shifts between grid and texture depending on where the light catches it. The "-001" suffix is the detail that matters here: where most Aquanaut references ship on the composite rubber strap, this one comes on the fully integrated steel bracelet, which changes the character of the watch considerably — dressier in hand, more formal on the wrist. At 8.1mm thin and 48mm lug to lug, it lies unusually flat and close for a watch rated to 120 metres, and it disappears under a cuff in a way that very few sports watches manage. The 324 S C inside carries a 21-carat gold rotor and was, in earlier production runs, certified to the Geneva Seal before Patek transitioned to their own proprietary standard — either way, the finishing visible through the caseback belongs to a movement that Patek regards as a workhorse in the best sense: accurate, robust and decorated as though it will be looked at. The butterfly clasp tucks cleanly under the wrist, and link adjustment is done mechanically by pin, which keeps the bracelet's integrated lines intact.

Reference
5167/1A-001
Brand
Patek Philippe
Collection
AquanautCase Size: 40
Case size
40.8mm
Case thickness
8.1mm
Lug width
21mm
Case material
Stainless steel
Case shape
Octagonal
Dial
Black
Crystal
Sapphire
Movement
Automatic
Calibre
324 S C
Functions
Date
Water resistance
120m
Bracelet / strap
Stainless steel bracelet
Strap colour
Silver
Clasp
Butterfly clasp
Lume
Luminous
Condition
Pre-owned
Retailer
Goldsmiths
Additional specifications
Lug-to-lug
48mm
Power reserve
45 hours
Learn more about Patek Philippe

Antoine Norbert de Patek, a Polish cavalry officer exiled after the November Uprising, founded a watch business in Geneva in 1839 with his countryman François Czapek. The partnership dissolved after six years, and in 1845 Patek took on the French watchmaker Adrien Philippe, inventor of the keyless winding crown. The firm became Patek Philippe in 1851.

That single invention mattered more than any other in the company's early history: it removed the winding key, and every modern watch descends from it. Queen Victoria bought a Patek pendant watch at the Great Exhibition the same year, establishing the royal patronage the house has traded on ever since.

The Stern family, dial manufacturers and long-standing suppliers, bought the company in 1932 during the Depression. Four generations later it remains in their hands — the last independent family-owned manufacture in Geneva, currently led by Thierry Stern.

Patek's reputation rests on complications: the Calibre 89 of 1989 carried thirty-three of them, and the Grandmaster Chime remains among the most complicated wristwatches made. The Nautilus, drawn by Gérald Genta in 1976 as a steel luxury sports watch, became an unlikely commercial phenomenon four decades after launch.

Production stays deliberately modest, in the tens of thousands annually, and every watch carries the Patek Philippe Seal, an in-house standard the company adopted in 2009 after abandoning the Geneva Seal as insufficiently strict.

1839
Antoine Norbert de Patek and François Czapek found the firm in Geneva.
1845
Adrien Philippe joins, bringing the keyless winding crown.
1851
The company is renamed Patek Philippe; Queen Victoria buys a watch.
1932
The Stern family acquires the company.
1976
The Nautilus debuts, designed by Gérald Genta.
2009
The Patek Philippe Seal replaces the Geneva Seal.

All Patek Philippe watches

Also in 3 collections

This watch appears in Stainless Steel Watches (2,626), Automatic Watches (1,366) and Pre-Owned, Ex-Display & Vintage Watches (240).

2-year Goldsmiths warranty

What the specifications mean

A mechanical watch for everyday wear.

Strengths

  • 120m water resistance covers swimming and watersports
  • 8.1mm is unusually slim for a 40.8mm case
  • 48mm lug-to-lug keeps the 40.8mm case wearable
  • Sapphire crystal, which resists scratching
  • Luminous hands and markers for low light
Best forSwimmingDress wearEveryday wear

Compare alternatives

Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.

Aquanaut 40mm Stainless Steel compared with 2 alternatives from other brands
SpecificationThis watchAquanaut 40mm Stainless Steel5167/1A-001Vacheron ConstantinOverseas 41mm Rose Gold4500V/110R-B705Audemars PiguetRoyal Oak 41mm Rose Gold26240OR.OO.D315CR.01
Price£65,000£50,950£74,450
Case size40.8mm41mm41mm
Water resistance120m150m50m
MovementAutomaticAutomaticAutomatic
StrapStainless steel braceletLeather strapLeather strap
Power reserve45 hours60 hours
This watch
  • Costs less
  • Costs more
  • Rated shallower

Your new watch

Frequently asked questions, and things you should know about this watch

Can I swim with it?

Yes. At 120m it is rated for swimming and snorkelling, though not for diving.

Will the glass scratch?

Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.

Does it need a battery?

No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.

How long does it run for when it's not worn?

About 45 hours fully wound — enough to survive a night off the wrist, but not a full weekend.

What size strap does it take?

21mm. 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 48mm, which suits wrists from roughly 16.5cm (6½ inches) upward.

Lug-to-lug decides fit more than case diameter does.

Is it a men's or women's watch?

Listed as men's.

Cheapest place to buy

Goldsmiths at £65,000, pre-owned. No UK retailer we track lists this reference new.

Is this available new?

Not from the UK retailers we track. This reference is listed as pre-owned only, at £65,000 from Goldsmiths. Goldsmiths test every pre-owned watch for authenticity, timekeeping and water resistance, and warrant it for 2 years — the same term they give on a new watch.

Who are Goldsmiths?

Goldsmiths has been selling watches in Britain since 1778 and is part of the Watches of Switzerland Group, which is listed on the London Stock Exchange. They are an authorised dealer, so a watch comes with the manufacturer’s own warranty.

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