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Tissot Seastar T120.410.27.051.00 Unisex Watch – 40mm Black Dial Rubber
Ref. T120.410.27.051.00
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Stepping up in the same colour and case shape
The round 40mm case pairs stainless steel with yellow gold PVD coating, and the same two-tone treatment carries through to the uni-directional rotating bezel. At 10mm thick and 72g, it sits close to the wrist without drawing attention to itself. The black dial carries hours, minutes, seconds, and a date, with Super-LumiNova on both hands and indices. A scratch-resistant sapphire crystal with antireflective coating sits above it all. The black rubber strap closes with a standard buckle and keeps the overall weight down. Water resistance is rated to 300 metres, and the ETA F06.412 quartz movement includes a battery end-of-life indicator.
- Reference
- T120.410.27.051.00
- Brand
- Tissot
- Collection
- Seastar
- Case size
- 40mm
- Case material
- Gold PVD
- Case shape
- Round
- Dial
- Black
- Crystal
- Sapphire
- Bezel
- Unidirectional rotating
- Movement
- Quartz
- Calibre
- ETA F06.412
- Functions
- Date
- Water resistance
- 300m
- Bracelet / strap
- Rubber strap
- Strap colour
- Black
- Clasp
- Buckle
- 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.
Also in 5 collections
This watch appears in the Tissot Seastar range (53), Sports Watches (794), Gold Watches (609), Dive Watches (567) and Watch Price Drops (290).
Temporarily out of stock
Watch Enclave is not currently taking orders for this reference. Last listed as available on 5 August 2026. Stock is checked nightly and this page updates when it returns.
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
- Sits in the lower half of Tissot's range as we list it
Tissot Seastar T120.410.27.051.00 alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | T120.410.27.051.00 | C0484101105100 | 96B439 |
|---|---|---|---|
| Price | £369 | £425 | £349 |
| Case size | 40mm | 40mm | 38mm |
| Water resistance | 300m | 300m | — |
| Movement | Quartz | Quartz | Quartz |
| Strap | Rubber strap | Stainless steel bracelet | Stainless steel bracelet |
| This watch |
|
|
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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 comparedIs it a men's or women's watch?
Listed as unisex, and at this size it suits any wrist that takes the dimensions.
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