Seestern S406 Sub300T Automatic Diver Watch, Silver
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The Seestern S406 Sub300T is a stainless steel automatic dive watch with a Japanese self-winding movement, sapphire crystal and 200m water resistance. It stands out for offering specs usually found on far more expensive divers: a screw-down crown, luminous Arabic numerals and a full calendar. It suits buyers who want a mechanical diver with real water ratings without paying Swiss-brand money. Against rivals like the Orient Kamasu or Seiko 5 Sports, it matches or beats them on sapphire and depth rating, but it comes from a smaller Chinese microbrand with less service support.
In stock
Lowest price we've seen: $490.16 on Nov 10 at TheFashionFever. Tracked across 1 store since Nov 10.
Owners of Seestern divers generally praise the build and specs for the money, calling the sapphire and 200m rating unusual at this level. Complaints center on case thickness, the odd lug width and inconsistent quality control on some examples.
The Seestern S406 Sub300T is an automatic mechanical diver watch with a silver finish. Its self-winding movement is of Japanese origin and needs no battery. The case and bracelet are stainless steel, and the dial window is sapphire crystal.
The watch is water resistant to 20 bar (200 m) and has a screw crown for a tighter seal. The Arabic numeral markers are luminous for reading in low light. A complete calendar shows the date, and the bracelet closes with a clasp.



