Kensington Watches
Tissot Seastar 1000 T120.417.11.421.00 Men's Watch – 45.5mm Red Dial Stainless Steel

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Tissot

Tissot Seastar 1000 T120.417.11.421.00 Men's Watch – 45.5mm Red Dial Stainless Steel

Ref. T120.417.11.421.00

Among our 269 Tissot watchesThis watch£399
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Stepping up in Tissot's range

Price range £265 to £2,740 across 269 Tissot watches in stock.

A 45.5mm round case in 316L stainless steel houses a red gradient dial with Super-LumiNova hands and hour markers. The sapphire crystal carries double-sided anti-reflective coating, and a unidirectional rotating bezel with a black aluminium ring frames the watch in a way that signals its diving credentials clearly. The chronograph runs to 1/10-second with a 30-minute counter, and a small seconds and date sit alongside a battery end-of-life indicator. At 12.8mm thick and 180g, it wears with noticeable weight on the stainless steel bracelet, which closes with a folding clasp featuring both a safety lock and diver extension. Water resistance is rated to 300 metres. Power comes from an ETA G10.212 quartz movement.

Reference
T120.417.11.421.00
Brand
Tissot
Collection
Seastar
Case size
45.5mm
Case material
Stainless steel
Case shape
Round
Dial
Red
Crystal
Sapphire
Bezel
Unidirectional rotating
Movement
Quartz
Calibre
ETA G10.212
Functions
Chronograph, Date, Small seconds
Water resistance
300m
Bracelet / strap
Stainless steel bracelet
Strap colour
Silver
Clasp
Folding clasp
Lume
Super-LumiNova
Retailer
Watch Enclave
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.

All Tissot watches

Also in 6 collections

This watch appears in Stainless Steel Watches (2,562), Chronograph Watches (1,107), Watches 44mm and Over (872), Sports Watches (647), Dive Watches (454) and Back in Stock (148).

International shipping available

What the specifications mean

A watch built to be worn hard and got wet.

Strengths

  • 300m water resistance, rated for actual diving
  • Sapphire crystal, which resists scratching
  • Luminous hands and markers for low light
  • Sits in the lower half of Tissot's range as we list it

Worth knowing

  • 45.5mm is a large watch with real presence
Best forDivingSwimmingTiming thingsEveryday wear
Less suited toSmall wrists

Compare alternatives

Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.

Seastar 1000 T120.417.11.421.00 Men's Watch – 45.5mm Red Dial Stainless Steel compared with 2 alternatives from other brands
SpecificationThis watchSeastar 1000 T120.417.11.421.00 Men's Watch – 45.5mm Red Dial Stainless SteelT120.417.11.421.00Hugo BossGrand Prix 44mm Stainless Steel Chronograph Mens Watch1514314Aston MartinMTIB1F501 Icon Chronograph Watch Gift Set - W2075MTIB1F501
Price£399£379£400
Case size45.5mm44mm45mm
Water resistance300m100m
MovementQuartzQuartzQuartz
StrapStainless steel braceletStainless steel braceletStainless steel bracelet
This watch
  • Wears smaller
  • Rated shallower

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.

Will the glass scratch?

Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.

Does it need a battery?

Yes. It is quartz, so expect a battery change every two to three years at a jeweller.

Is it a men's or women's watch?

Listed as men's.

Cheapest place to buy

Watch Enclave is the only UK retailer we track stocking this reference, so there is nothing to compare it against today.

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