San MartinSN0046G
Homage to the Seiko Prospex Monster
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 SN0046 Diver is a homage to the Seiko Prospex Monster, with a 42.5 mm case, 0.1 mm larger. It uses an automatic movement and is water resistant to 200 m. Its Resemblance Score is 60 out of 100. It costs about $288 at the official store.
Side by side with the original
Compared with reference SRPD25. Values marked ≈ are estimates, such as a reviewer's measurement.
| Spec | SN0046G | Monster (SRPD25) | Difference |
|---|---|---|---|
| Case diameter | 42.5 mm | 42.4 mm | +0.1 mm |
| Lug-to-lug | 46.5 mm | 49.4 mm | −2.9 mm |
| Thickness | 13 mm | 13.4 mm | −0.4 mm |
| Lug width | Not published | 20 mm | Can't compare |
| Water resistance | 200 m | 200 m | |
| Movement | Automatic, NH35 | Automatic, 4R36 | |
| Power reserve | Not published | 41 h | |
| Crystal | Sapphire, blue light AG coating | Mineral, cyclops | |
| Bezel | Stainless steel, 12 o'clock luminous marker | Unidirectional rotating | |
| Case material | 316L stainless steel | Stainless steel | |
| Lume | SLN C3 green (hands and markers) | LumiBrite on hands and index(es) | |
| Bracelet | 316L solid stainless steel bracelet, 22 mm x 18 mm | Stainless steel bracelet | |
| Weight | 192 g | 186 g |
The original
Seiko
Monster
Reference SRPD25, prospex automatic diver 200 m, blue dial, steel bracelet
- Case
- 42.4 mm
- Lug-to-lug
- 49.4 mm
- Thickness
- 13.4 mm
- Water resistance
- 200 m
- Movement
- Automatic, 4R36
- List price
- Not published
Why it scores 60
Proportions and movement are computed from specs. Design details and functions are judged from the brand's official images. How we score
Proportions19.4 / 30
- Case diameter11.6 / 120.1 mm apart
- Lug-to-lug0 / 82.9 mm apart
- Thickness5.2 / 60.4 mm apart
- Lug width0 / 4Not published, left out
Design signatures17 / 40
- Sunken bezel assembly set below the lug tops, with a shroud that extends from the lugs5.5 / 11Steel bezel set within shrouded flanks that extend from the lugs; the depth of the sink is not clear from the images.
- Large arrow-tipped hour hand with arrow-tipped minute and seconds hands4 / 8Hour hand with a cut-off arrow shape and a sword minute hand (brand: 3-sided cut hands).
- Large rectangular hour markers with a shark-tooth style marker at 123.5 / 7Large rectangular markers and round plots, with a split double bar at 12.
- Bracelet with solid 20 mm end links that widen straight to 22 mm0 / 5Bead-style multi-link bracelet, 22 mm at the case.
- Day-date window at 3 o'clock under a cyclops magnifier0 / 4Date only, with no day and no cyclops.
- Screw-down crown at 4 o'clock3 / 3Screw-down crown at 4 o'clock.
- Short, stubby lugs1 / 2Short lugs hidden by the shroud.
Functions and materials14 / 20
- Complications4 / 8Date only; the original has day and date.
- Bezel action4 / 4Rotating bezel; the brand does not state the click count.
- Case and bezel materials4 / 4Steel case and bezel.
- Crystal shape and date window2 / 4Bubble sapphire; the original has a mineral crystal with a cyclops.
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
- Shrouded case with a short 46.5 mm lug to lug
- Bubble sapphire crystal
- Strong SLN C3 lume
- 200 m water resistance
Less good
- Heavy at about 192 g
- 13 mm thick
- No day display, no cyclops
- Bracelet differs from the original
Versions and colours
- Orange DialIts own colourway, not on the originalabout $288
- Black DialIts own colourway, not on the originalabout $288
Compare
Sources
Checked 31 Oct 2026. Every figure on this page comes from one of these pages.