Photo by Minzoblate (CC BY-SA 3.0), via Wikimedia Commons · Tissot Seastar 1000 Automatic (ref T19.1.583.31, silver dial), same 300m dive-watch case as the Powermatic 80 model.

Seastar

Tissot’s dive line: Seastar 1000 (300m water-resistance despite the name, traced to the 1960s original), with the Powermatic 80 caliber and ceramic bezel insert. The family is Tissot’s answer to the entry-Swiss diver price band an Oris Aquis or Hamilton Khaki Navy buyer cross-shops against.

Year introduced: 20151 reference

References in this family

Tissot Seastar 1000 Powermatic 80 · T120.407.11.041.00
enthusiastmodernETA Powermatic 80 (Tissot) -- Swiss automatic, 21,600bph, 80h PR, 21j; Tissot-branded ETA Powermatic 80; used in PRX, Le Locle, and Seastar 100043mm2018–presenteditorial
Open

Which ref to buy

The Seastar 1000 is Tissot's dive watch: 300m rating, unidirectional ceramic bezel, Powermatic 80. It is ISO 6425 compliant. At the Tissot price point it is a fully specified diver with modern materials.

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Tissot Seastar 1000 Powermatic 80 · T120.407.11.041.00Buy
Seastar 1000 Powermatic 80 -- ceramic bezel, 300m, ISO compliant, the best-specified diver at the entry price.
The case for it:
Ceramic bezel insert at the Tissot price point is unusual. The 300m rating, ISO compliance, and Powermatic 80 movement make this one of the most complete dive watch specifications in the entry segment.
Consider instead if:
The Seastar competes against the Seiko Prospex line and the Citizen Promaster, both of which offer strong value. The Tissot wins on movement reserve; the Seiko wins on heritage and case design.
Open

Rankings last reviewed 2026-06-07. Editorial perspective only. Not financial advice.

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