San MartinSN0128-G
Homage to the Tudor Black Bay 58
about$288
Regular price at the brand's own website, checked 31 Oct 2026. Marketplace prices change often.
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The San Martin SN0128-G is a homage to the Tudor Black Bay 58, with a 40 mm case, 1 mm larger. It uses an automatic movement and is water resistant to 200 m. It costs about $288 at the official store.
Side by side with the original
Compared with reference M79030N-0001. Values marked ≈ are estimates, such as a reviewer's measurement.
| Spec | SN0128-G | Black Bay 58 (M79030N-0001) | Difference |
|---|---|---|---|
| Case diameter | 40 mm | 39 mm | +1 mm |
| Lug-to-lug | 49.5 mm | Not published | Can't compare |
| Thickness | 11.95 mm | ≈ 12 mm | −0.05 mm |
| Lug width | ≈ 20 mm | ≈ 20 mm | same |
| Water resistance | 200 m | Not published | |
| Movement | Automatic, NH35 | Automatic, MT5402 | |
| Power reserve | Not published | 70 h | |
| Crystal | Sapphire, aR coating | Sapphire | |
| Bezel | Unidirectional rotating, Ceramic | Unidirectional rotating, steel, coin edge, Black metal insert with gold-toned markings | |
| Case material | 316L stainless steel | Stainless steel | |
| Lume | BGW-9 on hands and markers | Not published | |
| Bracelet | Solid 316L stainless steel five-link bracelet | Steel, rivet-style | |
| Weight | 143 g | Not published |
- ≈ SN0128-G, Lug width: median of 2 agreeing independent measurements (20 mm); the maker does not publish it.
- ≈ Black Bay 58, Thickness: median of 2 agreeing independent measurements (11.9–12 mm); the maker does not publish it.
- ≈ Black Bay 58, Lug width: median of 3 agreeing independent measurements (20 mm); the maker does not publish it.
The original
Tudor
Black Bay 58
Reference M79030N-0001, black dial, steel bracelet
- Case
- 39 mm
- Lug-to-lug
- Not published
- Thickness
- ≈ 12 mm
- Water resistance
- Not published
- Movement
- Automatic, MT5402
- List price
- Not published
Why it scores as it does
Proportions and movement are computed from specs. Design details and functions are judged from the brand's official images. How we score
Lug-to-lug is neither published nor measured for one of the two watches, so there is not enough data to score.
Proportions— / 30
- Case diameter8 / 121 mm apart
- Lug-to-lug0 / 8Not published, left out
- Thickness5.9 / 60.1 mm apart
- Lug width4 / 4Same size
Design signatures— / 40
- Snowflake hands10 / 10Snowflake-style hour hand and a sword minute hand with lume; the brand lists 'Snowflake Hands'.
- Black unidirectional bezel with gold-toned markings and arrow index4 / 8Black ceramic bezel with a lumed pip at 12 on the black variant, but the bezel markings look white in the official images. Gold-toned print appears only on the dial and hands of the red-bezel variant.
- Domed black dial with gilt-toned print and applied plot markers3.5 / 7Black dial with applied-look round and bar markers and a printed hexagon logo. The brand lists a matte or enamel finish; only the red-bezel variant shows gilt-toned print, and the dial is not described as domed.
- Oversized crown2.5 / 5Screw-down crown with the brand's logo. The brand gives no crown size and it does not look oversized in the official images.
- Rivet-style steel bracelet0 / 5Five-link bracelet with polished centre links and screws, not a rivet-style bracelet.
- Dateless dial3 / 3Dateless dial on all variants.
- Brushed case top with polished flanks and edge2 / 2Brushed case top with polished bevels along the lugs in the official images.
Functions and materials— / 20
- Complications8 / 8Time only, no date, as on the original.
- Bezel action4 / 4Unidirectional rotating bezel with a coin-edge grip, as on the original. The brand page gives no click count; one reviewer counts 120 clicks.
- Case and bezel materials2 / 4316L steel case with a ceramic bezel insert; the original has a steel bezel with a metal insert.
- Crystal shape and date window4 / 4Sapphire with no date window or cyclops, as on the original.
Movement type— / 10
- Movement type10 / 10Same movement type.
What reviewers and owners say
Reviewers
From 3 reviews we read or watched.
Reviewers liked the case finishing, the proportions and the bezel. The brushed case with polished bevels, the coin-edge ceramic bezel with a firm, even click and no play, and the five-link bracelet with screw pins were praised. At about 12 mm thick the watch was described as balanced on the wrist despite a long lug-to-lug of about 49 mm, and the lume was called very good.
Reviewers also noted weaknesses. One felt the bezel insert is small for the case, because the coin-edge design leaves a narrow top surface. One saw visible gaps between bracelet links that suggest looser construction, and another found sharp edges on the underside of the clasp. Opinions on the colours were positive: the wine-red version with gold-toned print was liked, and a plain black version is also sold.
Good
- Brushed case with polished bevels
- Ceramic coin-edge bezel with a firm, precise action
- Screw-pin five-link bracelet
- Thin for a 40 mm diver at about 12 mm
- Strong lume
- Black, red and green bezel options
Less good
- Bezel insert looks small for the case
- Some gaps between bracelet links
- Sharp edges on the underside of the clasp
- five-link bracelet, not rivet style
Versions and colours
- Black bezel, enamel dialFollows the Black Bay 58 M79030N-0001 (black dial, steel bracelet)about $288
- Black bezel, matte dialFollows the Black Bay 58 M79030N-0001 (black dial, steel bracelet)about $288
- Red bezelIts own colourway, not on the originalabout $288
- Green bezelIts own colourway, not on the originalabout $288
Compare
Sources
Checked 31 Oct 2026. Every figure on this page comes from one of these pages.