The Tissot PRX is a collection, not a single watch: it includes automatic Powermatic 80 models in 35mm and 40mm, as well as quartz versions. This review focuses on the 40mm Powermatic 80, reference T137.407.11.351.00, and compares its published specifications with two other PRX options. The figures below are Tissot’s specifications, not results from a hands-on test.
What is the Tissot PRX Powermatic 80 40mm?
The representative automatic model reviewed here is Tissot reference T137.407.11.351.00, listed on Tissot’s U.S. storefront. It has a 316L stainless-steel case and bracelet, a Swiss automatic movement, a date display, and a see-through caseback. Tissot specifies a Nivachron balance spring and a power reserve of up to 80 hours. These are manufacturer claims, not independently measured performance results. Tissot’s U.S. product listing gives the full specification. No URL was provided for the additional note, so no link is included.
The watch has a sapphire crystal with an anti-reflective coating on the underside and a stated water-resistance rating of 10 bar (100m/330ft). Tissot lists a two-year warranty and a quick-release bracelet. Its dimensions are 40mm wide, 39.5mm long, and 10.93mm thick, with a 12mm lug width; listed weight is 138g. Those measurements help describe the watch, but they cannot determine how it will feel on a particular wrist.
Which PRX size and movement should you choose?
Choose by case size and movement first; specifications from one PRX should not be assumed to apply to another. Tissot’s cited listings cover these three distinct versions:
#1 Best Overall
- Case Size: 40.00 millimeter; Band Width: 12 millimeter; Case Thickness: 10.40 millimeter
- Swiss quartz movement, 316L stainless steel case, Index dial type, date
- Stainless steel bracelet, butterfly clasp with push-buttons closure
- Water-resistant up to a pressure of 10 bar (100 meter / 330 feet): Suitable for short periods of recreational swimming and showering, but no diving or snorkeling.
| Model and reference | Movement and reserve | Case and weight | Other listed details |
|---|---|---|---|
| PRX Powermatic 80 40mm, T137.407.11.351.00 (U.S.) | Automatic; up to 80 hours stated by Tissot | 40mm wide, 39.5mm long, 10.93mm thick; 138g | Date, Nivachron balance spring, sapphire crystal, 10 bar (100m/330ft) water resistance |
| PRX Powermatic 80 35mm, T137.207.11.051.00 (Ireland) | Automatic; 80 hours stated by Tissot | 35mm case, 10.93mm thick; 104g | Date, Nivachron balance spring, sapphire crystal, 10 bar (100m/330ft) water resistance |
| PRX Quartz 40mm, T1374101140100 (U.S.) | Quartz; power reserve not applicable | 40mm case; weight not stated on the cited listing | Date, battery end-of-life indicator, sapphire crystal, 10 bar (100m) water resistance |
Sources: Tissot’s Ireland Powermatic 80 35mm listing and U.S. PRX Quartz 40mm listing, accessed October 7, 2026. The 35mm and 40mm automatic entries are different references listed in different regional storefronts, not a controlled price comparison. Check the exact watch and local listing before buying.
35mm automatic or 40mm automatic?
The cited 35mm Powermatic 80 is 104g, compared with 138g for the cited 40mm reference. It is also 35mm across rather than 40mm. These dimensions and weights may help narrow your choice, but wrist shape, personal preference, and how a watch wears are not established by the product specifications. If possible, try on the specific size before deciding.
Rank #2
- Case Size: 40.00 mm, Band Width: 12, Case Thickness: 10.93 mm
- Automatic movement, 316L stainless steel case, Index dial type, Date
- Stainless steel strap/bracelet, interchangeable quick release bracelet,butterfly clasp with push-buttons closure
- Water-resistant up to a pressure of 10 bar (100 m / 330 ft)
- 2 Year International Warranty
Automatic or quartz?
The Powermatic 80 is automatic; the cited 40mm quartz reference uses a quartz three-hand movement and has a battery end-of-life indicator. The automatic model’s stated 80-hour reserve does not apply to the quartz watch. Select the exact movement and reference you want, then compare that model’s listing rather than relying on the PRX name alone.
Is the PRX water resistant to 100 metres?
Tissot lists 10 bar, equivalent to 100m/330ft, for the cited 40mm Powermatic 80 and 35mm Powermatic 80, and 10 bar/100m for the cited quartz model. This is a stated rating for those references, not a claim that every PRX has identical specifications. Follow the model-specific manual for use and care; the rating alone does not establish suitability for every activity or condition.
Rank #3
- Case Size: 40.00 mm, Band Width: 12 mm, Case Thickness: 10.40 mm
- Swiss quartz movement, 316L stainless steel case, Index dial type, Date
- Stainless steel bracelet, butterfly clasp with push-buttons closure
- Water-resistant up to a pressure of 10 bar (100 m / 330 ft): suitable for short periods of recreational swimming and showering, but no diving or snorkeling.
Can you change the PRX bracelet?
Tissot describes the cited automatic models’ bracelets as quick-release and interchangeable, and lists compatible PRX straps on its product pages. Compatibility is size- and reference-specific. Check the strap against the reference on your watch before ordering; the cited listings do not establish that generic third-party straps will fit.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Price, warranty and model-specific guidance
Tissot’s U.S. product page displayed $850 for reference T137.407.11.351.00 when accessed October 7, 2026. That is a time- and market-specific listed price, not a guaranteed current price or a price for every PRX. Confirm the exact reference, region, seller, and price at the time of purchase. The cited listings state a two-year warranty, but warranty validity and terms should be checked for the individual watch and market.
Rank #4
- Case Size: 38.00 mm, Band Width: 25mm, Case Thickness: 10.98 mm
- Automatic movement, leather strap, Index dial type, Date
- Water-resistant up to a pressure of 10 bar (100 m / 300 ft): suitable for short periods of recreational swimming and showering, but no diving or snorkeling.
For setting and care instructions, use Tissot’s U.S. user-manual directory, which lists separate manuals for PRX Powermatic 80 40mm, Powermatic 80 35mm, and PRX quartz 40mm. Tissot says registering a watch provides access to its specific manual and warranty-validity information.
Quick Recap
Best Value
- Case Size: 40.00 mm, Band Width: 12, Case Thickness: 10.40 mm
- Quartz movement, 316L stainless steel case with yellow gold PVD coating, Index dial type, Date
- Stainless steel strap/bracelet, butterfly clasp with push-buttons closure
- Water-resistant up to a pressure of 10 bar (100 m / 330 ft): suitable for short periods of recreational swimming and showering, but no diving or snorkeling.
- 2 Year International Warranty
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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