San MartinSN0005G-B
Homage to the Rolex GMT-Master 1675
about$378
Regular price at the brand's own website, checked 31 Oct 2026. Marketplace prices change often.
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The San Martin SN0005G-B is a homage to the Rolex GMT-Master 1675, with the same 40 mm case size. It uses an automatic movement and is water resistant to 200 m. Its Resemblance Score is 71 out of 100. It costs about $378 at the official store.
Side by side with the original
Compared with reference 1675. Values marked ≈ are estimates, such as a reviewer's measurement.
| Spec | SN0005G-B | GMT-Master 1675 (1675) | Difference |
|---|---|---|---|
| Case diameter | 40 mm | 40 mm | same |
| Lug-to-lug | 48.7 mm | ≈ 47 mm | +1.7 mm |
| Thickness | 13 mm | Not published | Can't compare |
| Lug width | Not published | ≈ 20.3 mm | Can't compare |
| Water resistance | 200 m | Not published | |
| Movement | Automatic, NH34 | Automatic, 1575 (earlier watches 1565) | |
| Power reserve | Not published | Not published | |
| Crystal | Sapphire, aR coating | Acrylic | |
| Bezel | Bidirectional, 24 clicks, 24-hour scale, Red and blue sapphire | Rotating, bidirectional 24-hour, Aluminium | |
| Case material | 316L stainless steel | Stainless steel | |
| Lume | Vintage SLN C3 green light (matte black and enamel white C3 dials) or BGW-9 blue light (BGW-9 dials), on bezel, hands and markers | Tritium on later dials | |
| Bracelet | 316L stainless steel five-link bracelet | Oyster (riveted or folded links by period) | |
| Weight | 148.5 g | Not published |
- ≈ GMT-Master 1675, Lug-to-lug: median of 3 agreeing independent measurements (46.5–47.5 mm); the maker does not publish it.
- ≈ GMT-Master 1675, Lug width: median of 2 agreeing independent measurements (20–20.5 mm); the maker does not publish it.
The original
Rolex
GMT-Master 1675
Reference 1675, 40 mm, aluminium bezel (vintage, 1959-1980)
- Case
- 40 mm
- Lug-to-lug
- ≈ 47 mm
- Thickness
- Not published
- Water resistance
- Not published
- Movement
- Automatic, 1575 (earlier watches 1565)
- List price
- Not published
Why it scores 71
Proportions and movement are computed from specs. Design details and functions are judged from the brand's official images. How we score
Proportions22.3 / 30
- Case diameter12 / 12Same size
- Lug-to-lug2.9 / 81.7 mm apart
- Thickness0 / 6Not published, left out
- Lug width0 / 4Not published, left out
Design signatures27 / 40
- Bidirectional rotating 24-hour bezel with aluminium insert5 / 10Bidirectional rotating 24-hour bezel with 24 clicks in a red and blue two-colour layout, but the insert is domed sapphire, not aluminium.
- Fourth, 24-hour GMT hand sweeping the dial9 / 9Fourth, red 24-hour hand with a triangle tip sweeping the dial, as in the official images.
- Mercedes-style hour hand7 / 7Hour hand with a circle and three-spoke tip, with a plain sword minute hand.
- Crown guards on a 40 mm Oyster case0 / 6No crown guards; the crown sits in a plain case side.
- Black dial with luminous hour markers4 / 4Matte black dial (also an enamel black dial) with luminous round plots and bar markers; the C3 versions have a gilt-toned finish.
- Domed acrylic crystal2 / 4Domed (bubble) crystal, but it is sapphire with AR coating, not acrylic.
Functions and materials12 / 20
- Complications4 / 8Date at 3 and a fourth GMT hand; the one review says the NH34's GMT hand sets independently (caller type), and the original's record does not state its GMT type.
- Bezel action4 / 4Bidirectional 24-click 24-hour bezel, as on the original.
- Case and bezel materials2 / 4Steel case and bracelet with a sapphire bezel insert; the original's insert is aluminium.
- Crystal shape and date window2 / 4Domed sapphire with AR coating and no cyclops; the original's crystal is acrylic.
Movement type10 / 10
- Movement type10 / 10Same movement type.
What reviewers and owners say
We haven't read enough independent reviews of this model to summarise them yet.
Good
- Sapphire bezel insert with a 24-click bidirectional action in the one review
- Domed sapphire crystal
- Five-link bracelet with polished chamfers
- 200 m water resistance
- Three dial and lume combinations
Less good
- About 13.6 mm thick and large at 41 mm across the bezel in the one review
- Case has no crown guards
- Only one review of this version so far
Versions and colours
- Matte black dial, C3 lumeIts own colourway, not on the originalabout $378
- Enamel white dial, C3 lumeIts own colourway, not on the originalabout $378
- Enamel white dial, BGW-9 lumeIts own colourway, not on the originalabout $388
- Enamel black dial, BGW-9 lumeIts own colourway, not on the originalabout $388
Earlier versions
- Hangzhou 6460 version: Earlier units carried a Hangzhou 6460 movement and cost more; the current listing uses the Seiko NH34 (2024 change per the reviewer).
Compare
Sources
Checked 31 Oct 2026. Every figure on this page comes from one of these pages.