New Releases · 2026-10-20
Tissot Seastar 1000 40mm Powermatic 80
A black-dial steel dive watch that combines 300-metre water resistance with an 80-hour automatic calibre.
By Chronolume digest · Original English summary · Based on Tissot official catalogue (checked 26 October 2026; catalogue date is not a watch launch date); release-date research reviewed
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What to know
Tissot's Seastar 1000 brings genuine dive-watch specifications to an everyday-friendly 40 mm case. The black dial uses bold hands and luminous markers, while the unidirectional rotating bezel gives the watch the familiar layout of an underwater timing instrument.
Inside, the Powermatic 80 automatic provides an extended 80-hour reserve and Tissot's Nivachron balance spring. The case is rated to 300 metres, with a screw-down crown and caseback, an antireflective sapphire crystal and an exhibition window over the movement.
The stainless-steel bracelet gives this reference a more versatile look than the rubber-strap alternatives. At 40 mm, it also offers a notably different wrist presence from the larger professional Seastar designs already featured on Chronolume.
At a glance
| reference | T1208071105100 |
|---|---|
| releaseDateResearch | Exact first-release date not verified from available official/independent materials. 2026-10-26 is the Chronolume ingestion date, not its release date. |
| editorialFallbackDate | 2026-10-20 |
| editorialFallbackDateNote | Owner-selected display fallback; true model launch date remains unverified. This is not an independently verified release date. |
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