Tissot Seastar 1000 Powermatic 80 (40 mm)
The 40 mm Seastar 1000 automatic: 300 m water resistance, screw-down crown, ceramic bezel insert, sapphire, Powermatic 80 with an 80-hour reserve, steel bracelet. Swiss made.
In stock · sold by Amazon.com. Price as of November 3, 2026, 18:15 UTC.
2 versions of the Tissot Seastar 1000 Powermatic 80 (40 mm)
Same case and movement, different dial, bezel or strap. Each line is its own Amazon listing with its own price today; the strap variants earn fewer spec points than the bracelet. 2 variants share the same price and score today; T120.807.11.051.00 is shown first because it is listed first in our catalog, not because it is better.
| Reference | Dial / strap | Strap | Spec pts | Price | Value Score | Sales rank | Buy |
|---|---|---|---|---|---|---|---|
T120.807.11.051.00 Best value | Black dial | Steel | 90 | $875.00 | 34 | #2,096 | Amazon |
 T120.807.11.091.00 | Green dial | Steel | 90 | $875.00 | 34 | #4,851 | Amazon |
Amazon.com prices as of November 3, 2026, 18:15 UTC — details.
What you get
Published manufacturer specifications. Fields we could not verify are left out rather than guessed.
How the 90 spec points add up
Value Score = 100 × √(spec points per dollar ÷ the best ratio among automatic dive watches in stock on Amazon today). Full methodology.
Compared with other automatic dive watches
Same type, other model families, verified Amazon prices today. See the full Automatic Dive Watches ranking →
| # | Watch | Movement | Crystal | Water res. | Case diameter × lug-to-lug | Fits wrist | Spec pts | Price | Value Score | Buy |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | Automatic (Seiko NH35) | Mineral | 200 m | 40 × 48 mm | ≥ 17.3 cm (6.8″) | 77 | $88.00third-party | 100 | Amazon |
| 2 |  | Automatic (F6922) | Mineral | 200 m | 41.5 × 47 mm | ≥ 16.9 cm (6.7″) | 76 | $213.15third-party | 64 | Amazon |
| 3 |  | Automatic (F6922) | Mineral | 200 m | 41.5 × 47 mm | ≥ 16.9 cm (6.7″) | 76 | $225.20third-party | 62 | Amazon |
| 4 |  | Automatic (F6922) | Sapphire | 200 m | 41.8 × 46.8 mm | ≥ 16.8 cm (6.6″) | 83 | $252.60third-party | 61 | Amazon |
| 5 |  | Automatic (F6922) | Sapphire | 200 m | 40 mm | — | 83 | $257.04third-party | 61 | Amazon |
| 6 | Automatic (4R36) | Hardlex | 200 m ISO | 45 × 48 mm | ≥ 17.3 cm (6.8″) | 81 | $485.00third-party | 44 | Amazon | |
| 7 | | Automatic (Powermatic 80) | Sapphire | 300 m | 40 mm | — | 90 | $875.00 | 34 | Amazon |
Amazon.com prices as of November 3, 2026, 18:15 UTC — details. third-party = sold by a marketplace seller, not Amazon (warranty may differ); ships later = not in stock today, never crowned best value.
Comparisons with the Tissot Seastar 1000 Powermatic 80 40 mm Black T120.807.11.051.00
Questions about the Tissot Seastar 1000 Powermatic 80 (40 mm)
How much does the Tissot Seastar 1000 Powermatic 80 (40 mm) cost on Amazon?
What is the Value Score of the Tissot Seastar 1000 Powermatic 80 (40 mm)?
What wrist size fits the Tissot Seastar 1000 Powermatic 80 (40 mm)?
What are alternatives to the Tissot Seastar 1000 Powermatic 80 (40 mm)?
21 mm straps that fit the Tissot Seastar 1000 Powermatic 80 (40 mm)
The lug width is 21 mm, so any 21 mm strap fits. These are the straps we list for that width; see the lug width chart for every size and the accessories page for winders, boxes and tools.
| Item | Kind | Lug width | Price | Buy |
|---|---|---|---|---|
 BISONSTRAP vintage leather, 21 mm, brown 21 mm fits the Orient Bambino and Tissot Gentleman. | Leather strap | 21 mm | $13.99third-party | Amazon |
Amazon.com prices as of November 3, 2026, 18:15 UTC — details. Accessories have no Value Score; they are listed for fit, not ranked.
Guides that apply to this watch
- Ranked among watches under $1,000
- What the water-resistance rating actually permits
- Sapphire vs Hardlex vs mineral: what the crystal changes
- Lug width and strap sizing
- Automatic vs solar vs quartz: accuracy and running cost
- Watch gift guide by budget and recipient
- Buying a watch on Amazon: sellers, warranty, returns