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Bamford GMT 40mm
Ref. GMT-BLK-BLK-AQ
A 40 mm case in matte black PVD-coated 316L stainless steel keeps a slim 11.7 mm profile, with a lug-to-lug span of 46.5 mm. The bezel is internal and bi-directional, operated by a dedicated crown at 10 o'clock rather than the usual position. Sapphire crystal with anti-glare coating sits above a black dial dressed with aqua blue accents, baton indices filled with Super-LumiNova, and a 24-hour GMT hand. The date appears at 3 o'clock. A PVD-coated steel bracelet with folding clasp completes the watch, rated to 100 metres.
- Reference
- GMT-BLK-BLK-AQ
- Brand
- Bamford
- Case size
- 40mm
- Case thickness
- 11.7mm
- Lug width
- 20mm
- Case material
- Black PVD
- Case shape
- Round
- Dial
- Black
- Crystal
- Sapphire
- Bezel
- Bidirectional rotating
- Movement
- Automatic
- Calibre
- SW330-1
- Functions
- GMT, Date
- Water resistance
- 100m
- Bracelet / strap
- Stainless steel bracelet
- Strap colour
- Black
- Clasp
- Folding clasp
- Lume
- Super-LumiNova
- Retailer
- Goldsmiths
Additional specifications
- Lug-to-lug
- 46.5mm
- Power reserve
- 42 hours
- Origin
- Swiss made
Learn more about Bamford
George Bamford started Bamford Watch Department in London in 2004, customising watches that their makers had no intention of seeing customised — blacked-out cases in military-grade PVD, recoloured dials, personalised details. The industry's response was frosty, and in some cases openly hostile.
Then the position changed. LVMH signed Bamford as an official customisation partner for TAG Heuer, Zenith and Bulgari in 2017, making legitimate what had been a grey-market practice, and Bamford became the first company officially licensed to customise Rolex watches through authorised channels.
Bamford London followed as a brand in its own right, producing its own watches rather than modifying others': the Mayfair and GMT lines, quartz and automatic, at a fraction of the price of the watches the workshop had built its name on.
The design vocabulary is consistent — bright accent colours, sandblasted cases, a certain irreverence about watchmaking convention — and the collaborations have run from Aston Martin to popular culture licences.
- 2004
- George Bamford begins customising watches in London.
- 2015
- Bamford London launches as a brand in its own right.
- 2017
- Signed as LVMH's official customisation partner.
- 2018
- The Mayfair line establishes the in-house collection.
- 2020
- Collaborations widen beyond watchmaking.
Also in 4 collections
This watch appears in Stainless Steel Watches (2,782), Automatic Watches (1,540), All Black Watches (286) and GMT Watches (211).
Temporarily out of stock
Goldsmiths is not currently taking orders for this reference. Last listed as available on 20 September 2026. Stock is checked nightly and this page updates when it returns.
What the specifications mean
A mechanical watch for everyday wear.
Strengths
- 100m water resistance covers swimming and watersports
- 40mm suits most wrists
- 46.5mm lug-to-lug keeps the 40mm case wearable
- Sapphire crystal, which resists scratching
- Luminous hands and markers for low light
Bamford GMT alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | GMT-BLK-BLK-AQ | WWFE01 | BMM0A10874 |
|---|---|---|---|
| Price | £1,450 | £1,495 | £1,450 |
| Case size | 40mm | 41mm | 40mm |
| Water resistance | 100m | 100m | 50m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Stainless steel bracelet | Leather strap | Leather strap |
| Power reserve | 42 hours | 41 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 100m it is rated for swimming and snorkelling, though not for 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 42 hours fully wound — enough to survive a night off the wrist, but not a full weekend.
What size strap does it take?
20mm. 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 46.5mm, which suits wrists from roughly 16cm (6¼ inches) upward.
Lug-to-lug decides fit more than case diameter does.
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