Tissot · Family: Seastar 1000
The Tissot Seastar 1000 Powermatic 80 T120.807.11.051.00 is a 40mm steel dive watch with a black dial, unidirectional aluminum bezel, and 300 meters of water resistance — the second Tissot reference in Cazador's catalog after the PRX Powermatic 80. It runs the automatic Powermatic 80 caliber with a Nivachron hairspring and up to 80 hours of power reserve. Cazador has no verified price observations (n=0) for this reference as of today.
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Insufficient data: 0 price observations (PricePoints) recorded as of July 25, 2026. Cazador does not estimate or infer a range without sourced market data.
Tissot registered the 'Seastar' trademark in Switzerland on December 13, 1952, following years of experiments with the Swiss Laboratory for Watchmaking Research in Neuchâtel that had already produced water-resistant models like the 'Camping' (1938) and 'Aquasport' (1939). The name was reserved for a new generation of hermetically sealed watches.
The modern Seastar 1000 collection, alongside the higher-water-resistance Seastar 2000, arrived in Tissot's catalog in 2018, reviving the historic name for a more accessible dive-watch range within the Swatch Group's lineup.
This Powermatic 80 version runs the eponymous automatic caliber, with a Nivachron hairspring resistant to magnetic fields and up to 80 hours of power reserve. The 40mm steel case retains the unidirectional aluminum bezel graduated to 60 minutes and 300 meters of water resistance, with a screw-down crown and caseback. [UNVERIFIED: we do not confirm the exact introduction year of this specific black-dial combination on reference T120.807.11.051.00 within the current catalog]. This is the second Tissot reference we're adding to Cazador's catalog, after the PRX Powermatic 80.
Cazador has no verified price observations for this reference (0 PricePoints recorded as of July 2026). We do not publish estimates without our own sourced market data.
Tissot registered the 'Seastar' trademark in Switzerland on December 13, 1952, following earlier water-resistant models like the 'Camping' (1938) and 'Aquasport' (1939).
In 2018, alongside the higher-water-resistance Seastar 2000, reviving the historic name for a more accessible dive-watch range.
[UNVERIFIED: the official spec sheet we consulted does not mention ISO 6425 certification for this reference]. It offers 300 meters of water resistance with a screw-down crown and caseback.
Up to 80 hours, thanks to reduced-friction components and a Nivachron hairspring resistant to magnetic fields.
The PRX is a 1970s-heritage integrated watch with a single-link bracelet; the Seastar 1000 is a dedicated dive watch with a rotating bezel and higher water resistance (300m vs. 100m).
Aluminum, unidirectional, graduated to 60 minutes — a common material for dive watches in this price segment.