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Tissot Seastar 1000 43mm Mens Watch Black
Ref. T1204071105100
Sits in Tissot’s upper tier here — more premium than three quarters of the Tissot watches we list, which start at £245.
Price range £245 to £1,875 across 310 Tissot watches in stock.The Seastar 1000 sits at the serious end of Tissot's T-Sport range: an ISO 6425-rated diver that earns its 300-metre credentials through a screw-down crown and caseback rather than trading on the rating as a styling gesture. At 12.7mm thick it is flatter than many rivals at this depth rating, which gives it a better account of itself under a cuff than the specification might suggest. The unidirectional bezel runs a black ceramic insert inside a steel ring, a combination that keeps the rotating element readable without the whole watch reading as purely instrumental. The Powermatic 80 calibre earns its keep in two ways a table cannot quite convey: an 80-hour power reserve means a watch left on the nightstand Friday evening is still running Monday morning, and the Nivachron balance spring resists magnetic fields that would affect a conventional hairspring — useful for anyone who works near motors or medical equipment. The exhibition caseback lets you watch the Tissot wave rotor in motion, and it is a decent view. The steel bracelet is unashamedly shiny, picks up fingerprints readily, and takes a few weeks to feel like yours — but the triple safety folding clasp with diver extension is the kind of detail that justifies itself the moment you actually need it.
- Reference
- T1204071105100
- Brand
- Tissot
- Collection
- Seastar
- Case size
- 43mm
- Case thickness
- 12.7mm
- Lug width
- 21mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Black
- Crystal
- Sapphire
- Bezel
- Unidirectional rotating
- Movement
- Automatic
- Calibre
- Powermatic 80
- Functions
- Date
- Water resistance
- 300m
- Bracelet / strap
- Stainless steel bracelet
- Strap colour
- Silver
- Clasp
- Folding clasp
- Lume
- Super-LumiNova
- Retailer
- Goldsmiths
Additional specifications
- Lug-to-lug
- 49.6mm
- Power reserve
- 80 hours
Learn more about Tissot
Charles-Félicien Tissot and his son Charles-Émile founded the company in Le Locle in 1853, assembling gold pocket watches and, unusually for the time, exporting aggressively — Russia became a major market within a decade.
Tissot's history is a sequence of firsts achieved through willingness to try materials and ideas the establishment considered unserious. The first mass-produced pocket watch with two time zones came in 1853. The first anti-magnetic wristwatch in 1930. The Astrolon of 1971 was the first watch with a movement made largely of injection-moulded plastic, and it worked. The RockWatch of 1985 used Alpine granite for the case, followed by watches in wood and mother-of-pearl.
The T-Touch of 1999 was the most significant: a tactile sapphire crystal allowing the wearer to access altimeter, barometer, compass, thermometer, and chronograph by touching the glass, years before touchscreens were commonplace.
Tissot merged with Omega in 1930 and both became founding members of what is now the Swatch Group. Its position in the group is volume and accessibility — Swiss mechanical and quartz watches at prices most people can reach, with the Powermatic 80 movement offering an eighty-hour reserve at entry level.
The company has held timekeeping roles across cycling, basketball, motorsport, and fencing.
- 1853
- Founded in Le Locle by Charles-Félicien and Charles-Émile Tissot.
- 1930
- Merges with Omega; releases the first anti-magnetic wristwatch.
- 1971
- The Astrolon uses a plastic movement.
- 1985
- The RockWatch is cased in Alpine granite.
- 1999
- The T-Touch introduces a tactile sapphire crystal.
Also in 6 collections
This watch appears in the Tissot Seastar range (53), Back in Stock (4,007), Stainless Steel Watches (2,833), Automatic Watches (1,417), Sports Watches (667) and Dive Watches (486).
Manufacturer’s guarantee
Best of 2 retailers
What the specifications mean
A mechanical watch built to be worn hard and got wet.
Strengths
- 300m water resistance, rated for actual diving
- 49.6mm lug-to-lug keeps the 43mm case wearable
- Sapphire crystal, which resists scratching
- 80-hour reserve survives a weekend off the wrist
- Luminous hands and markers for low light
Worth knowing
- 43mm sits at the larger end
Tissot Seastar 1000 alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | T1204071105100 | C0326071109100 | H82525160 |
|---|---|---|---|
| Price | £770 | £920 | £990 |
| Case size | 43mm | 43mm | 43mm |
| Water resistance | 300m | 300m | 300m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Stainless steel bracelet | Stainless steel bracelet | Stainless steel bracelet |
| Power reserve | 80 hours | 80 hours | 80 hours |
| This watch |
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Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Yes. At 300m it is rated for swimming, snorkelling and recreational diving.
Water resistance explainedWill the glass scratch?
Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.
Sapphire, mineral and acrylic comparedDoes it need a battery?
No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.
Quartz, automatic and solar comparedHow long does it run for when it's not worn?
About 80 hours fully wound — enough to sit off the wrist over a weekend and still be running.
What size strap does it take?
21mm. Any strap of that width will fit, and on most modern watches quick-release bars make the swap a two-minute job with no tools.
Will it fit my wrist?
Lug-to-lug is 49.6mm, which suits wrists from roughly 16.5cm (6½ inches) upward.
Lug-to-lug decides fit more than case diameter does.
How to size a watch to your wristIs it a men's or women's watch?
Listed as men's.
Cheapest place to buy
Both Goldsmiths and Mappin & Webb list it at £770, so choose on delivery and warranty rather than price.
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