Reference page

Tissot Supersport Chrono 45,5 mm T125.617.11.051.00

calibre ETA G10.212 · 45.5 mm

Tissot times MotoGP, Superbike, the NBA and the Tour. The Supersport Chrono is the watch all those liveries end up on: 45.5 mm, Swiss quartz, and a clasp with a wetsuit extension it has no use for.

Tissot Supersport Chrono 45,5 mm T125.617.11.051.00

Imagen: Tissot, web oficial

The storyWhy this reference matters

Tissot has spent 30 years buying sports timekeeping, and you need that to make sense of this watch. Official timekeeper of UCI cycling since 1995, of international ice hockey since 1996, of MotoGP since 2001, of the Superbike World Championship since 2011 and of the NBA since 2015, plus rugby's Top 14. This isn't hoarding sponsorship: it's timing infrastructure, and the brand puts it on display in the catalogue.

The Supersport Chrono is where all of that physically lands. It's the case that carries the NBA team specials, the Tour de France editions and the seasonal liveries, because it has the size and the price to take them without drama. The name isn't entirely a coincidence either: Supersport is also the name of one of the classes in the Superbike World Championship, the series Tissot has sponsored since 2011.

Inside is an ETA G10.212, and here Tissot does give you the number. It's a quartz chronograph 29.80 mm across and 5.12 mm tall, four jewels, hours, minutes, jumping small seconds at six, a date window and counters for 1/10 second, 60 seconds and 30 minutes. ETA's PowerDrive electronics drive those hands at more than 200 steps per second, in both directions.

SpecificationsThe numbers, in one table

BrandTissot
FamilySupersport
ReferenceT125.617.11.051.00
CalibreETA G10.212
MovementCuarzo
Frequency32.768 Hz
Power reservePila con unos 38 meses de autonomía teórica, según ETA
Jewels4
ComplicationsCronógrafo · Contador de 30 minutos · Contador de 1/10 de segundo · Segundero pequeño · Fecha · Funciones ADD y SPLIT · Indicador de fin de vida de la pila (EOL)
Diameter45.5 mm
Thickness11.92 mm
Lug width22 mm
CaseAcero inoxidable 316L
CrystalZafiro resistente a los arañazos
Water resistance100 m (10 bar)

IdentificationHow to tell it apart

The measurements are unmistakable: 45.5 mm across, 11.92 mm thick, 22 mm lugs and 188 grams with the bracelet fitted. That weight is part of the watch's character; if what's in your hand feels light, it isn't this one. The bezel ring is aluminium and fixed — it doesn't turn.

This particular reference is the black dial with plain indices, Super-LumiNova hands and a steel bracelet. The folding clasp has a safety catch and a wetsuit extension, a detail inherited from the Seastar side of the family that is close to decorative here: the bezel doesn't turn and the watch isn't meant to go down on a tank. The bracelet is quick-release.

The same family exists in 42 mm, so if you're weighing up two examples, measure the case before you study the dial. And don't confuse it with the T-Race, which is the line Tissot officially ties to MotoGP, with its brake-disc bezel and a magnifier over the date.

CollectingWhat collectors check

Buy this as a watch to wear, not as an investment. What justifies the money is the package: sapphire, a genuine 100 metres, a steel bracelet with quick-release and a Swiss chronograph that measures tenths. None of that appreciates, but all of it can be enjoyed daily without flinching.

Second-hand, the weak point is the aluminium bezel ring: it scratches easily, loses its tone over the years, and isn't a part anyone replaces lightly. Then test the chronograph — start it, stop it, reset it, and check all three counter hands land dead on zero. If one sits off, the watch has taken a knock or somebody botched a battery change.

And bear in mind that these quartz calibres aren't opened for repair. ETA publishes nothing for them beyond electrical tests and hand-fitting, so when the movement fails it gets swapped whole. At 188 grams in a 45.5 mm case, measure your wrist before you fall for it: this is a watch you notice all day.

Common questionsWhat people ask us about this reference

What do the chronograph's ADD and SPLIT functions do?

ADD lets you accumulate consecutive times without resetting, useful for timing back-to-back stages. SPLIT freezes the hand so you can read an intermediate time while the chronograph keeps counting underneath; press again and the hand jumps to the real elapsed time.

Can you dive with the Tissot Supersport Chrono?

It's good for 100 metres and fine for swimming or snorkelling. It isn't a dive watch: no rotating bezel and no ISO 6425 certification, so it isn't the tool for scuba.

Which movement is in the Supersport Chrono?

A Swiss ETA G10.212 quartz, four jewels, with chronograph counters for 1/10 second, 60 seconds and 30 minutes. ETA rates its theoretical battery life at around 38 months.

Is the Supersport the official MotoGP watch?

Not quite. The line Tissot officially associates with MotoGP in its catalogue is the T-Race. The Supersport has been the vehicle for NBA and Tour de France special editions.

Keep readingWhere to go from here

Close relativesThe ones it gets confused with

See Tissot Supersport at auction now → What is up for sale on Catawiki today. Read the page above before you bid: half the mistakes come from not checking the reference.

Confidence: alta — this page was checked against the sources below. If a detail looks wrong to you, write to us and we will fix it.

  1. Tissot Supersport Chrono 45.5mm | Model T1256171105100 | Tissot
  2. Tissot Sport Partnerships | Tissot World | Tissot
  3. ETA Chronograph G10.212 AD | Manufacture Horlogère Suisse | ETA SA
  4. ETA Caliber G10.212 Watch Movement | Caliber Corner
← Back to the Library