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Bremont Supermarine Automatic 43mm Limited Edition Unisex Watch Green
Ref. SM43-DT-GNCER-GN-N-S
Sits in Bremont’s upper tier here — more premium than three quarters of the Bremont watches we list, which start at £2,895.
Price range £2,895 to £15,750 across 27 Bremont watches in stock.The Supermarine has always been Bremont's working diver — tested against genuine operational demands rather than imagined ones — and this ceramic iteration pushes that brief considerably further than the standard steel models. Green ceramic is among the most technically demanding colours to produce: the firing temperature is narrow enough that a few degrees too hot destroys the pigment entirely, which is part of why the finish looks so different from anodised or PVD treatments. The result is a watch with the kind of uniform, light-eating depth of colour that coated metals simply cannot replicate, and a hardness that makes the case and bezel effectively scratchproof in any normal use. The BE-92AV inside is chronometer-rated, running at 28,800bph through an Anachron balance spring and Glucydur balance — components chosen for thermal and magnetic stability rather than specification-sheet prestige. Fifty hours of reserve means a weekend off the wrist causes no problems. On the wrist, 43mm in ceramic carries more comfortably than the same diameter in steel; the material is light enough that the watch does not announce its presence in the way a steel diver at this rating tends to. The fabric strap — woven on Jacquard looms and fastened with a self-gripping clasp — keeps it flat against the wrist and is straightforward to swap, which matters on a watch built to go into the water.
- Reference
- SM43-DT-GNCER-GN-N-S
- Brand
- Bremont
- Collection
- Supermarine
- Case size
- 43mm
- Lug width
- 22mm
- Case material
- Ceramic
- Case shape
- Round
- Dial
- Green
- Crystal
- Sapphire
- Bezel
- Unidirectional rotating
- Movement
- Automatic
- Calibre
- 11 1/2''' BE-92AV
- Functions
- Date
- Water resistance
- 500m
- Bracelet / strap
- Fabric strap
- Strap colour
- Green
- Lume
- Super-LumiNova
- Retailer
- Mappin & Webb
Additional specifications
- Power reserve
- 50 hours
Learn more about Bremont
Nick and Giles English founded Bremont in 2002, four years after their father died in a plane crash that Nick survived. All three had restored and flown vintage aircraft together, and the brand that emerged is inseparable from that. The name comes from Antoine Bremont, a French farmer who sheltered the brothers after an emergency landing.
Bremont set out to rebuild British watchmaking, which had effectively ended in the twentieth century. The early watches used Swiss movements in British-designed cases, with the Trip-Tick three-part case construction and a hardened outer barrel treated to over 2000 Vickers.
The military and aviation work is real rather than thematic. Bremont holds contracts with squadrons across the RAF, the US Air Force, and other services, producing issued watches for specific units, and has made watches for Martin-Baker ejection seat survivors — tested to the ejection forces themselves.
The company has also built watches incorporating material from historical objects: oak and copper from HMS Victory, aluminium from the Wright Flyer, and steel from Bletchley Park.
The manufacturing ambition advanced with the opening of a facility in Henley and the release of the ENG300 series in 2021, the first Bremont movement designed and largely made in England. Production is in the low tens of thousands annually.
- 2002
- Nick and Giles English found Bremont.
- 2007
- The first watches ship with the Trip-Tick case.
- 2009
- The Martin-Baker collaboration begins.
- 2021
- The ENG300 becomes the first English-made Bremont calibre.
Also in 7 collections
This watch appears in the Bremont Supermarine range (14), Back in Stock (2,038), Automatic Watches (1,503), Sports Watches (687), Dive Watches (495), Green Dial Watches (353) and Limited Edition Watches (176).
What the specifications mean
A mechanical watch built to be worn hard and got wet.
Strengths
- 500m water resistance, rated for actual diving
- Sapphire crystal, which resists scratching
- Luminous hands and markers for low light
- One of Bremont's more premium watches
Worth knowing
- 43mm sits at the larger end
Bremont Supermarine alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | SM43-DT-GNCER-GN-N-S | 8163-175/93 | 807 |
|---|---|---|---|
| Price | £6,450 | £6,550 | £5,020 |
| Case size | 43mm | 42mm | 39.9mm |
| Water resistance | 500m | 300m | — |
| Movement | Automatic | Automatic | Automatic |
| Strap | Fabric strap | Fabric strap | Leather strap |
| Power reserve | 50 hours | 42 hours | 42 hours |
| This watch |
|
|
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Yes. At 500m 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 50 hours fully wound — enough to survive a night off the wrist, but not a full weekend.
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.
Is it a men's or women's watch?
Listed as unisex, and at this size it suits any wrist that takes the dimensions.
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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