Tap the image to enlarge
Tissot Seastar 1000 Quartz 40mm Mens Watch
Ref. T1208521105100
See more premium optionsHide
Stepping up in the same colour and case shape
The Seastar sits within Tissot's T-Sport line as an original design rather than a revival — no vintage reference behind it, no anniversary to mark, just a clear brief to build a capable diver with a second time zone readable at a glance. The GMT hand is green, which ties it visually to the bi-colour black-and-green bezel and gives the dial a point of difference from the plainer siblings in the same generation. At 11.77mm thick for a watch rated to 300 metres, the case is noticeably slim — most divers at this depth rating carry considerably more height, and this one will actually disappear under a shirt cuff. The black dial and luminous indexes keep things legible in low light, and the date sits at six o'clock rather than interrupting the chapter ring. The brushed and polished three-link bracelet is quick-release, which makes swapping to a strap straightforward without tools, and the deployant clasp handles the 148g weight without shifting on the wrist.
- Reference
- T1208521105100
- Brand
- Tissot
- Collection
- Seastar
- Case size
- 40mm
- Case thickness
- 11.77mm
- Lug width
- 20mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Black
- Crystal
- Sapphire
- Bezel
- Unidirectional rotating
- Movement
- Quartz
- Calibre
- Powermatic 80
- Functions
- GMT, Date
- Water resistance
- 300m
- Bracelet / strap
- Stainless steel bracelet
- Strap colour
- Two-tone
- Clasp
- Deployant clasp
- Lume
- Super-LumiNova
- Retailer
- Mappin & Webb
Additional specifications
- Weight
- 148g
- Origin
- Swiss made
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 7 collections
This watch appears in the Tissot Seastar range (53), Back in Stock (4,007), Stainless Steel Watches (2,833), Sports Watches (667), Dive Watches (486), Two-Tone Watches (448) and GMT Watches (208).
What the specifications mean
A watch built to be worn hard and got wet.
Strengths
- 300m water resistance, rated for actual diving
- 40mm suits most wrists
- Sapphire crystal, which resists scratching
- Luminous hands and markers for low light
- Second time zone for travelling
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 | T1208521105100 | C0484101105100 | 96B433 |
|---|---|---|---|
| Price | £455 | £425 | £399 |
| Case size | 40mm | 40mm | 43mm |
| Water resistance | 300m | 300m | 200m |
| Movement | Quartz | Quartz | Quartz |
| Strap | Stainless steel bracelet | Stainless steel bracelet | Stainless steel bracelet |
| This watch | Closely matched |
|
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?
Yes. It is quartz, so expect a battery change every two to three years at a jeweller.
Quartz, automatic and solar comparedWhat size strap does it take?
20mm. 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.
Is it a men's or women's watch?
Listed as men's, though at 40mm it sits in the range that suits anyone.
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.
More Tissot watches like the Seastar 1000
In stock, and close on style and price
