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Omega Seamaster 300 Co-Axial Chronometer 41mm Automatic Mens Watch
Ref. 23492412110001
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Stepping up in Omega's range
The original Seamaster 300 arrived in 1957 as a tool for working divers and military swimmers. This version keeps that lineage but shifts the material conversation entirely: the case is Omega's proprietary Bronze Gold alloy, a formula combining 9-karat gold with palladium and silver that produces a warm hue sitting between pink and yellow gold. The practical consequence of the gold and palladium content is that it resists the dark patination that afflicts standard bronze — the case will mellow with wear but will not turn the familiar green. The 8912 movement inside is Master Chronometer certified by METAS, which means independent verification of accuracy across a 15,000-gauss magnetic field — a standard that most movements, including many expensive ones, cannot meet. Twin barrels in series give it a 60-hour reserve, enough margin for a weekend without winding. At 14.4mm thick it is not a slim watch, but the 48mm lug-to-lug keeps it honest on wrists that are not especially large. The sandwich dial gives the brown surface a depth that flat printing cannot, with aged-effect Super-LumiNova in the indices that reinforces the vintage character without pretending the watch is something it is not. The Bronze Gold pin buckle on the leather strap is matched to the case alloy rather than sourced separately, a consistency that becomes obvious in direct comparison with watches where the strap hardware is simply plated.
- Reference
- 23492412110001
- Brand
- Omega
- Collection
- Seamaster
- Case size
- 41mm
- Case thickness
- 14.40mm
- Lug width
- 21mm
- Case material
- Bronze
- Case shape
- Round
- Dial
- Brown
- Crystal
- Sapphire
- Bezel
- Unidirectional rotating
- Movement
- Automatic
- Calibre
- 8912
- Water resistance
- 300m
- Bracelet / strap
- Leather strap
- Strap colour
- Brown
- Clasp
- Buckle
- Lume
- Super-LumiNova
- Condition
- Ex-display
- Retailer
- Goldsmiths
Additional specifications
- Lug-to-lug
- 48mm
- Power reserve
- 60 hours
- Origin
- Swiss made
- Gem set
- Yes
Learn more about Omega
Louis Brandt began assembling pocket watches in La Chaux-de-Fonds in 1848. His sons moved production to Biel in 1880 and, in 1894, released a calibre whose parts were fully interchangeable and which could be serviced by any watchmaker with standard tools. They named it Omega. The movement was successful enough that the company took its name.
Omega's history is bound up with measurement in public. It became official timekeeper of the Olympic Games in 1932 and has held the role for most Games since, which drove genuine engineering: photo-finish cameras, touchpads in swimming pools, and the timing systems that made hundredths of a second meaningful.
NASA qualified the Speedmaster for manned spaceflight in 1965 after testing chronographs from several manufacturers to destruction, and it was on Buzz Aldrin's wrist on the lunar surface in 1969. The watch has never been substantially redesigned.
The Seamaster line dates to 1948 and covers everything from dress watches to saturation diving instruments. Omega's technical position strengthened considerably after 1999 with the adoption of George Daniels' co-axial escapement, the first genuinely new escapement to reach series production in two centuries, and more recently through Master Chronometer certification testing resistance to magnetic fields at 15,000 gauss.
The company has been part of the Swatch Group since its formation.
- 1848
- Louis Brandt starts assembling watches in La Chaux-de-Fonds.
- 1894
- The Omega calibre gives the company its name.
- 1932
- Becomes official timekeeper of the Olympic Games.
- 1948
- The Seamaster line is introduced.
- 1965
- NASA qualifies the Speedmaster for manned spaceflight.
- 1999
- The co-axial escapement enters series production.
Also in 6 collections
This watch appears in Automatic Watches (1,368), Leather Strap Watches (958), Sports Watches (700), Dive Watches (484), Pre-Owned, Ex-Display & Vintage Watches (154) and Brown Dial Watches (90).
Manufacturer’s guarantee
What the specifications mean
A mechanical watch built to be worn hard and got wet.
Strengths
- 300m water resistance, rated for actual diving
- 48mm lug-to-lug keeps the 41mm case wearable
- Sapphire crystal, which resists scratching
- Luminous hands and markers for low light
Worth knowing
- 14.4mm thick, so it will not disappear under a cuff
- Leather does not suit regular contact with water
Compare alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | 23492412110001 | 8163-182B.1/13 | 1-36-13-07-83-70 |
|---|---|---|---|
| Price | £10,700 | £11,190 | £11,600 |
| Case size | 41mm | 39mm | 43.2mm |
| Water resistance | 300m | 300m | 300m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Leather strap | Leather strap | Stainless steel bracelet |
| Power reserve | 60 hours | 42 hours | 100 hours |
| This watch |
|
|
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.
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 60 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 £10,700, ex-display. 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 ex-display only, at £10,700 from Goldsmiths. Ex-display watches are unworn shop stock rather than second-hand — sold below the recommended retail price, and with the manufacturer’s guarantee intact.
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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