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Tissot Seastar 43mm Mens Watch
Ref. T1204071104103
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 349 Tissot watches in stock.The Seastar 1000 is not a revival — Tissot drew the series from scratch for watersport use, building ISO 6425 compliance into the brief from the start. The ceramic bezel insert, screw-down crown behind its case guards, and the quick-release bracelet with its diver extension are working features, not styling decisions. The 43mm case runs to 12.7mm thick, which is compact for the depth rating and means it passes under a cuff without forcing the sleeve. At 49.6mm lug to lug it will be a confident fit on larger wrists and honest about its presence on smaller ones. The blue sunray dial shifts noticeably under changing light, the date sits quietly at six, and the Super-LumiNova on the plongeur hands and indexes holds long enough to be genuinely useful rather than decorative. The movement is the point where the Seastar separates from comparable divers at this end of the market. The Powermatic 80 runs at 21,600 vibrations per hour — lower than high-beat alternatives, which is part of how it achieves an 80-hour power reserve. That figure means a watch left off on Friday evening is still running Monday morning, which changes how you live with it.
- Reference
- T1204071104103
- Brand
- Tissot
- Collection
- Seastar
- Case size
- 43mm
- Case thickness
- 12.7mm
- Lug width
- 21mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Blue
- 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
- Mappin & Webb
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), Stainless Steel Watches (2,531), Automatic Watches (1,573), Blue Dial Watches (701), Sports Watches (696) and Dive Watches (499).
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 alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | T1204071104103 | C0326071109100 | H82505140 |
|---|---|---|---|
| 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 |
|
|
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
Mappin & Webb is the only UK retailer we track stocking this reference, so there is nothing to compare it against today.
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