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The 40mm Tissot Seastar 1000 Powermatic 80 pairs a compact stainless-steel case with a sapphire crystal, a manufacturer-rated 300m water resistance, and an automatic movement listed with up to 80 hours of power reserve. Tissot’s U.S. listing examined here is the black-dial steel-bracelet reference T120.807.11.051.00; confirm the exact reference and local price before buying. The available research confirms specifications and third-party review coverage, but not independent physical testing or measured accuracy for this article.
At a glance: Tissot Seastar 1000 Powermatic 80 40mm
| Specification | Current U.S. listing examined |
|---|---|
| Reference | T1208071105100 / T120.807.11.051.00, black dial and steel bracelet |
| Case | 40 × 40 mm, 316L stainless steel |
| Thickness | 12.48 mm |
| Lug width | 20 mm |
| Crystal | Sapphire with anti-reflective coating on the underside |
| Bezel | Unidirectional rotating bezel with mineral bezel ring |
| Water resistance | 30 bar (300 m / 1,000 ft), as stated by Tissot |
| Movement | Swiss automatic, date, patented Nivachron balance spring |
| Power reserve | Up to 80 hours, as stated by Tissot |
| Bracelet | Stainless steel, quick release, folding clasp with safety lock and push-buttons |
| Warranty | Two years on the cited U.S. listing |
| U.S. price snapshot | $875 when the cited page was accessed; price and availability can change |
Specifications and included bracelet or strap can vary across the Seastar family and by market. The figures in this table are from Tissot’s U.S. product page for the cited reference.
Case, dial, and crystal
The listed 40mm case is 12.48mm thick and has a 20mm lug width. Those dimensions are useful starting points, but they do not establish how the watch will sit on a particular wrist; try it on if possible. The case is 316L stainless steel, and Tissot lists a see-through caseback.
Tissot specifies a sapphire crystal with anti-reflective coating on its underside. The rotating bezel has a mineral bezel ring, an important distinction from the sapphire crystal: the two components use different materials. Tissot also lists Super-LumiNova on the hands and indexes.
#1 Best Overall
- 20 mm Leather strap
- Designed to fit 20 mm lugs
- Stainless Steel Standard buckle
- Compatible with the following watch collections starting with: T122.407,T063.610,T122.410,T101.410,T101.417,T097.410,T019.430,T108.408,T114.417,T100.417,T927.407,T101.407,T100.430T922.410,T006.414,T117.509T092.427,T121.430
- This strap is comparable with strap sku T610043025 and T600043013.
Movement and water resistance
Tissot lists a Swiss automatic movement with a date function, a patented Nivachron balance spring, and up to 80 hours of power reserve. “Up to” is the manufacturer’s stated maximum; the research does not establish measured running time or accuracy for an individual sample.
The official product page states water resistance up to 30 bar (300m / 1,000ft) and lists a screw-down crown and caseback. This is a manufacturer rating, not evidence that every individual watch remains water-tight. Condition, seals, crown engagement, impacts, and service history matter for actual water use. If the watch has been damaged or its service history is uncertain, have it inspected and pressure-tested before exposing it to water. The available research does not establish ISO 6425 certification for this reference.
Rank #2
- 20 mm Leather strap
- Designed to fit 20 mm lugs
- Stainless Steel Standard buckle
- Compatible with the following watch collections starting with: T122.407,T063.610,T122.410,T101.410,T101.417,T097.410,T019.430,T108.408,T114.417,T100.417,T927.407,T101.407,T100.430T922.410,T006.414,T117.509T092.427,T121.430
- This strap is comparable with strap sku T610043024 and T600043012.
Bracelet and fit
The examined reference comes with a stainless-steel bracelet. Tissot lists a folding clasp with a safety lock and push-buttons, as well as a quick-release system. The research does not independently assess clasp adjustability or wearing comfort, so treat those as points to check in person rather than established review findings.
Tissot lists a 20mm lug width and recommends checking strap compatibility by exact watch reference. Width alone does not guarantee that a replacement strap or bracelet will fit the case or attachment correctly. Confirm compatibility before ordering third-party accessories.
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- Premium Quality - Made from genuine leather, ensuring durability and a comfortable fit.
- Alligator Grain Embossed - Elegant alligator grain pattern adds a touch of luxury to your watch.
- Quick Release - Easily swap straps without the need for tools, making it convenient to change your style.
- Multiple Sizes - Available in 19mm, 20mm, 21mm, and 22mm widths, compatible with a variety of watches.
- Versatile Compatibility - Suitable for a wide range of traditional and smartwatches, perfect for any occasion.
What to check before buying
- Confirm the complete reference number and dial/finish; the U.S. listing discussed here is T120.807.11.051.00 in black with a steel bracelet.
- Check the listed case dimensions and try the watch on to judge fit on your wrist.
- Verify the supplied bracelet or strap, warranty terms, price, and availability with the seller in your region.
- For water use, consider the individual watch’s condition and service history; arrange an inspection and pressure test when appropriate.
- Check exact-reference compatibility before buying a replacement strap.
Verdict
The Tissot Seastar 1000 Powermatic 80 40mm offers a well-specified package on paper: a 40mm steel case, sapphire crystal, mineral bezel ring, 300m manufacturer-stated water resistance, and an automatic movement listed with up to 80 hours of reserve. Whether it is right for you depends on wrist fit, the exact configuration, and how the bracelet and clasp feel in person.
The strongest reason to consider it is the combination of compact listed dimensions and substantial manufacturer specifications. Keep expectations grounded: the sources available here do not provide independent accuracy measurements, clasp testing, or a physical test by this article’s author. Check the exact reference and current local listing rather than assuming every Seastar variant shares the same details.
Rank #4
- 19 mm Leather strap
- Designed to fit 19 mm lugs
- Stainless Steel Deployment buckle with push buttons
- Compatible with the following watch collections starting with: T006.407,T065.430,T109.410,T055.417,T101.917,T095.417,T055.430,T067.417,T055.410
- This strap is comparable with strap sku T610032786 and T600032781.
FAQ
What is the exact reference discussed here?
The Tissot U.S. product page examined is reference T1208071105100, also written T120.807.11.051.00. It is the black-dial steel-bracelet configuration. Other finishes and configurations exist, so check the reference on the listing.
Does the 40mm Seastar have a ceramic bezel?
Tissot lists a mineral bezel ring for the cited 40mm reference. The sapphire crystal is a separate component and should not be confused with the bezel material.
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- 12 mm leather strap
- Designed to fit 12 mm lugs
- Stainless steel standard buckle
- Compatible with Tissot PRX watch models starting with T137410, T137407, T931407
How long is the power reserve?
Tissot lists up to 80 hours. The research does not include a measured power-reserve test for an individual watch.
Can I dive with the Tissot Seastar 1000 Powermatic 80?
Tissot states water resistance up to 30 bar (300m / 1,000ft). That rating does not establish the condition of a particular watch or confirm ISO 6425 certification. Have a watch with uncertain service history or possible damage inspected and pressure-tested before water use.
What strap size does the 40mm model use?
Tissot lists a 20mm lug width and a quick-release bracelet for the examined reference. Check compatibility by exact reference before buying a replacement strap or bracelet.
What does the watch cost?
Tissot’s U.S. product page listed the cited reference at $875 when accessed for this research. Prices and availability change and vary by region, so check the current local listing.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
