SeesternS404
Homage to the Seiko 62MAS
about$289
Regular price at seesternwatches.com, checked 31 Oct 2026. Marketplace prices change often.
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The Seestern S404 is a homage to the Seiko 62MAS, with a 38 mm case, 2 mm smaller. It uses an automatic movement and is water resistant to 200 m. Its Resemblance Score is 83 out of 100. It costs about $289 at the official store.
Side by side with the original
Compared with reference SPB451. Values marked ≈ are estimates, such as a reviewer's measurement.
| Spec | S404 | 62MAS (SPB451) | Difference |
|---|---|---|---|
| Case diameter | 38 mm | 40 mm | −2 mm |
| Lug-to-lug | 46.2 mm | 46.4 mm | −0.2 mm |
| Thickness | 13.5 mm | 13 mm | +0.5 mm |
| Lug width | Not published | 20 mm | Can't compare |
| Water resistance | 200 m | 300 m | |
| Movement | Automatic, Seiko NH35A | Automatic, 6R55 | |
| Power reserve | Not published | 72 h | |
| Crystal | Sapphire, inner AR coating | Sapphire, anti-reflective coating on inner surface | |
| Bezel | Unidirectional rotating bezel (360 degrees), Ceramic, with lumed dot or full lume | Unidirectional rotating bezel, Aluminium | |
| Case material | 316L stainless steel, brushed and polished | Stainless steel | |
| Lume | Japan lume, glows green | LumiBrite | |
| Bracelet | Stainless steel bracelet with female end links | Three-link steel bracelet with shorter links | |
| Weight | 90 g | 168 g |
The original
Seiko
62MAS
Reference SPB451, blue dial, steel bracelet (prospex 1965 heritage diver's watch)
- Case
- 40 mm
- Lug-to-lug
- 46.4 mm
- Thickness
- 13 mm
- Water resistance
- 300 m
- Movement
- Automatic, 6R55
- List price
- $1,300
Why it scores 83
Proportions and movement are computed from specs. Design details and functions are judged from the brand's official images. How we score
Proportions18.9 / 30
- Case diameter4 / 122 mm apart
- Lug-to-lug7.4 / 80.2 mm apart
- Thickness5 / 60.5 mm apart
- Lug width0 / 4Not published, left out
Design signatures36 / 40
- Baton hands with lume9 / 9Lumed baton hour and minute hands, the hour hand chunkier than the minute hand, with a thin seconds hand.
- Oversized raised hour markers9 / 9Large applied rectangular lume markers in polished frames on every colourway.
- Unidirectional dive bezel with aluminium insert4 / 8Black rotating bezel with a dotted minute track and lume pip at 12, but the brand lists a ceramic insert where the original's is aluminium.
- Sharp-edged case with solid shoulders and a slightly curved profile8 / 8Sharp-edged case with solid shoulders, sloping lugs and a slightly overhanging bezel in the official images.
- Three-link steel bracelet6 / 6Three-link steel bracelet with a folding clasp in the official images.
Functions and materials18 / 20
- Complications8 / 8Date window at 3, as on the original.
- Bezel action4 / 4The brand lists a unidirectional bezel, as on the original; the click count is not on the page.
- Case and bezel materials2 / 4Steel case like the original, but a ceramic insert where the original has aluminium.
- Crystal shape and date window4 / 4Domed box sapphire with inner AR coating and no cyclops, as on the original's sapphire.
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
- Compact 38 mm case with a short 46.2 mm lug-to-lug
- Sapphire crystal with inner AR coating and 200 m water resistance
- Ceramic bezel insert with a lume pip or full lume, per the brand
- Japan lume and a lumed date wheel, per the brand
- Offered on a steel bracelet or a rubber strap
Less good
- Thick at 13.5 mm for a 38 mm watch
- Ceramic insert instead of the original's aluminium
Versions and colours
- Black dial, steel braceletIts own colourway, not on the originalabout $289
- Blue dial, steel braceletIts own colourway, not on the originalabout $289
- Grey dial, steel braceletIts own colourway, not on the originalabout $289
- Red fumée dial, steel braceletIts own colourway, not on the originalabout $289
Compare
Sources
Checked 31 Oct 2026. Every figure on this page comes from one of these pages.