SeesternS406
Homage to the Doxa SUB 300T
about$299
Regular price at seesternwatches.com, checked 31 Oct 2026. Marketplace prices change often.
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The Seestern S406 is a homage to the Doxa SUB 300T, with a 42 mm case, 0.5 mm smaller. It uses an automatic movement and is water resistant to 200 m. It costs about $299 at the official store.
Side by side with the original
Compared with reference 840.10.351.10. Values marked ≈ are estimates, such as a reviewer's measurement.
| Spec | S406 | SUB 300T (840.10.351.10) | Difference |
|---|---|---|---|
| Case diameter | 42 mm | 42.5 mm | −0.5 mm |
| Lug-to-lug | 46 mm | Not published | Can't compare |
| Thickness | 13 mm | 13.65 mm | −0.65 mm |
| Lug width | 20 mm | 20 mm | same |
| Water resistance | 200 m | 1200 m | |
| Movement | Automatic, NH35A | Automatic | |
| Power reserve | Not published | 38 h | |
| Crystal | Sapphire, inner AR coating | Sapphire, anti-reflective | |
| Bezel | Unidirectional rotating bezel, 360 degrees, with lume pip, Sandblasted and brushed finish (material not stated) | Unidirectional rotating bezel with dive-time and depth scales (scale in feet) | |
| Case material | 316L stainless steel, mixed brushed, polished and sandblasted finishes | 316L stainless steel | |
| Lume | Japan Lume, glows blue | Super-LumiNova | |
| Bracelet | Stainless steel beads-of-rice bracelet, tapering from 20 to 18 mm | Stainless steel 'Beads of Rice' | |
| Weight | 172 g | Not published |
The original
Doxa
SUB 300T
Reference 840.10.351.10, professional, orange dial, stainless steel bracelet
- Case
- 42.5 mm
- Lug-to-lug
- Not published
- Thickness
- 13.65 mm
- Water resistance
- 1200 m
- Movement
- Automatic
- List price
- $2,190
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 diameter10 / 120.5 mm apart
- Lug-to-lug0 / 8Not published, left out
- Thickness4.7 / 60.7 mm apart
- Lug width4 / 4Same size
Design signatures— / 40
- Angular cushion-shaped steel case10 / 10Broad, slab-sided cushion-shaped steel case with a brushed top and short lugs, as in the official images.
- Unidirectional bezel with dive-time and depth scales12 / 12Unidirectional bezel with a feet depth scale and a minute scale in the black, orange, teal and yellow images.
- Oversized luminous minute hand6 / 6Oversized luminous minute hand, orange on the black dial and a large luminous hand on the orange, teal and yellow dials.
- Helium release valve in the case side0 / 5No valve is visible in the official images and the listing does not mention one.
- Beads-of-rice steel bracelet4 / 4Beads-of-rice steel bracelet with a milled buckle, in every image.
- Flat sapphire crystal3 / 3Listing states a flat sapphire crystal with inner AR coating.
Functions and materials— / 20
- Complications4 / 8Date only; the original also has a helium release valve.
- Bezel action4 / 4Unidirectional on both.
- Case and bezel materials4 / 4316L steel case, as on the original's steel case.
- Crystal shape and date window4 / 4Flat sapphire front crystal with a date window and no cyclops, as on the original.
Movement type— / 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
- Beads-of-rice bracelet with a milled buckle and 4 micro adjustments
- Flat sapphire crystal with inner AR coating per the brand
- Seiko NH35A automatic with a lumed date wheel option
- 200 m water resistance and a screw-down crown
- Case shape follows the original's cushion profile
Less good
- Brand lists about 13 mm height and 172 g with the bracelet
- No helium valve, unlike the original
- Brand quotes 'optional lumed date wheel', so a lumed date is not confirmed for every unit
Versions and colours
- Black dialIts own colourway, not on the originalabout $299
- Dark blue dialIts own colourway, not on the originalabout $299
- Orange dialIts own colourway, not on the originalabout $299
- Teal (listed as Tiffany blue) dialIts own colourway, not on the originalabout $299
- Yellow dialIts own colourway, not on the originalabout $299
- Army style (listing name, no image or spec text on the listing)Its own colourway, not on the originalabout $299
Compare
Sources
Checked 31 Oct 2026. Every figure on this page comes from one of these pages.