Reference page

Tissot PRX Powermatic 80 Titanio 38 mm T137.807.44.061.00

desde 2025 · calibre Tissot Powermatic 80 (base ETA C07.11) · 38 mm

Four years of people asking for a 38 mm PRX, and when it finally arrived in 2025 it came in grade 2 titanium: 84 grams on the wrist against 130 for the steel one. The size that was missing.

Tissot PRX Powermatic 80 Titanio 38 mm T137.807.44.061.00

Imagen: Tissot, web oficial

The storyWhy this reference matters

Since 2021 the PRX has grown in every direction except the one that mattered. There was a 40 mm, a 35 mm, a chronograph, mother-of-pearl dials, gold-tone versions. But the 40 carried a well-known flaw — the first bracelet link doesn't articulate, so the whole thing hangs as though it were half a centimetre longer lug to lug — and the 35 was too small for a lot of people. The gap between them was obvious, and it took four years to fill.

It was filled in 2025, twice over: Tissot launched the 38 mm PRX in two materials the line had never touched, grade 2 titanium and Damascus steel. Monochrome called the 38 the collection's perfect size without hedging — the one that fixes the problem without giving up the presence that made the model popular in the first place. Both versions went into the permanent catalogue, not a limited run.

Grade 2 titanium is commercially pure titanium: lighter than steel, hypoallergenic, and carrying that slightly duller, warmer tone that gives the material away at a glance. Case and bracelet, all the same metal. The scales put it better than any description — 84 grams against the 130 Tissot quotes for the 40 mm steel PRX.

SpecificationsThe numbers, in one table

BrandTissot
FamilyPRX
ReferenceT137.807.44.061.00
Years madedesde 2025
CalibreTissot Powermatic 80 (base ETA C07.11)
MovementAutomático
Frequency21.600 alt/h (3 Hz)
Power reserve80 horas
Jewels23
ComplicationsFecha
Diameter38 mm
Thickness10.98 mm
Lug width11 mm
CaseTitanio grado 2
CrystalZafiro con tratamiento antirreflejos en la cara interior
Water resistance100 m (10 bar)

IdentificationHow to tell it apart

Colour is the first tell. Titanium doesn't shine like steel — the grey is flatter, with a touch of warmth in it — and the anthracite dial on this reference deliberately plays off that tone. Hands, indices and the date frame all come in a gold finish, a monochrome scheme the collection hadn't tried before. The stamped waffle texture of the automatic PRX stays.

Lug width settles it, and it catches people out: 11 mm, not the 12 of the 40. Bracelets and straps from the 40 mm PRX will not fit this watch. Diameter 38 mm, thickness 10.98 mm per Tissot, case length 37.50 mm, weight 84 grams. Sapphire case back and 100 metres of water resistance, like the rest of the automatic family.

As for how much wrist it takes up, Monochrome measured 49.2 mm lug to lug including the first rigid bracelet link — the useful figure here, because that link doesn't bend. At 38 mm that number becomes manageable for most people, which is the whole argument for this version. The other 38 mm titanium dial is blue with silver detailing.

CollectingWhat collectors check

Grade 2 titanium is softer than steel and scratches sooner. Make peace with that before you buy, because it also doesn't polish the same way: an aggressive job takes off the original brushing and leaves a lighter, uneven surface that announces itself. With titanium you are almost always better off living with the marks than trying to erase them — and certainly better off not handing the case to just anyone.

The clasp still has no micro-adjustment, a point Monochrome makes and one you feel in summer, when your wrist swells and there's no half link to fall back on. It's the standing complaint about the line. In its favour, the bracelet is quick-release and the system works well.

Inside is the same Powermatic 80 as the rest of the family: ETA C07.11, 3 Hz, 23 jewels, 80 hours of reserve and an antimagnetic Nivachron hairspring. The calibre is everywhere, which means parts and watchmakers are everywhere too. Buying used, check the sapphire case back, the state of the case edges — titanium picks up knocks more readily — and that the bracelet still has all its links, because spares are thin on the ground here as well.

Common questionsWhat people ask us about this reference

How much does the titanium Tissot PRX weigh?

Tissot quotes 84 grams with the bracelet fitted. For comparison, the brand's own spec sheet puts the 40 mm steel PRX at 130 grams, so the difference on the wrist registers immediately.

Is the whole watch titanium, or only the case?

Case and bracelet are both grade 2 titanium, which is commercially pure titanium. It's the first time the PRX collection has used the material, introduced in 2025 alongside a Damascus steel version.

Does titanium scratch easily?

More than steel, yes, because it's a softer metal. It also takes polishing badly: an aggressive job removes the factory brushing and lightens the surface, so living with the marks is usually the better call.

Will a 40 mm PRX bracelet fit the 38 mm?

No. The 38 mm has an 11 mm lug width and the 40 mm has 12 mm, so the parts don't swap between sizes. You need bracelets and straps made for the specific case.

Keep readingWhere to go from here

Close relativesThe ones it gets confused with

See Tissot PRX 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 PRX 38mm Titanium | Model T1378074406100 | Tissot
  2. First Look: The Tissot PRX now in 38mm, in Full-Titanium or Damascus Steel | Monochrome Watches
  3. Review – Tissot PRX 40 205 Powermatic 80 | Monochrome Watches
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