The ice-blue Tissot PRX Powermatic 80 is reference T137.407.11.351.00, the 40mm automatic version—not the separate 35mm automatic or a quartz PRX. Tissot’s U.S. listing specifies an automatic movement with up to 80 hours of power reserve, a sapphire crystal and water resistance to 100m. Whether its cool, reflective dial and integrated-bracelet shape work for you is a matter of taste and wrist fit; the visual impressions below are attributed to the people who reported them.
What the ice-blue PRX looks like
Brice Goulard’s first look for Monochrome Watches, published September 3, 2023, describes the dial as light blue with a metallic, reflective effect. He wrote: “The dial has more reflections, more shimmer and an overall cool metallic feel.” That is Goulard’s visual impression, not a promise that the color will look identical in every light or on every wrist.
The dial’s textured pattern sits inside the PRX’s tonneau-shaped steel case, with a steel bracelet integrated into the design. Tissot says the case shape draws on a 1978 design. The combination gives the watch a stronger visual identity than a plain round case-and-bracelet watch, while the pale blue dial makes the overall look notably cooler and brighter.
Official specifications for reference T137.407.11.351.00
Tissot’s U.S. product listing identifies this as the 40mm PRX Powermatic 80. Its listed dimensions are 40mm wide, 39.5mm long and 10.93mm high. The case and bracelet are stainless steel, and the watch weighs 138g. A see-through caseback exposes the Swiss automatic movement; the dial has a date display and Super-LumiNova on the hands.
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| Specification | Tissot’s U.S. listing |
|---|---|
| Reference | T137.407.11.351.00 |
| Case | 316L stainless steel; 40mm wide, 39.5mm long, 10.93mm high |
| Movement | Swiss automatic; up to 80 hours of power reserve; patented Nivachron balance spring |
| Crystal | Sapphire with a single underside anti-reflective coating |
| Water resistance | 10 bar (100m / 330ft), as stated by Tissot |
| Bracelet and clasp | Grey steel bracelet; butterfly clasp with push-buttons; quick-release system |
| Other details | Date; see-through caseback; Super-LumiNova on the hands; 138g; two-year warranty |
The 80-hour figure is the manufacturer’s stated maximum reserve, not an independent measurement. Tissot describes it as a movement designed to keep pace with busy lifestyles. A 100m water-resistance rating is likewise the manufacturer’s specification, not a guarantee for every activity or for a watch whose condition and seals are unknown.
Is 40mm too big? Compare it with the 35mm automatic
There is no universally correct PRX size. The 40mm model has a wider case and a more substantial presence; the 35mm alternative may be preferable if you want a smaller case or a less prominent look. Case diameter alone cannot settle fit: consider the watch’s overall appearance on your wrist, how the integrated bracelet meets it, and whether you like the dial and bracelet proportions.
Rank #2
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Tissot lists the ice-blue 35mm Powermatic 80 separately as reference T137.207.11.351.00. It is also automatic, with an 80-hour stated reserve, sapphire crystal, see-through back, 100m stated water resistance and a quick-release bracelet concept. Its listed dimensions are 35mm across and 10.93mm high, and its listed weight is 104g. The two references are distinct watches, not simply different case settings on one model.
| Ice-blue automatic PRX | 40mm reference | 35mm reference |
|---|---|---|
| Model | T137.407.11.351.00 | T137.207.11.351.00 |
| Case size | 40mm wide; 39.5mm long | 35mm wide |
| Height | 10.93mm | 10.93mm |
| Listed weight | 138g | 104g |
| U.S. displayed price | $850 | $795 |
| Price source and date | Tissot U.S. listing, accessed October 4, 2026 | Tissot U.S. listing, accessed October 4, 2026 |
Prices and availability can change, and those figures are specific to Tissot’s U.S. pages when accessed on October 4, 2026. Check the 40mm listing and 35mm listing for current details in your region.
Rank #3
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Fit reports for the 35mm should not be treated as measurements of the 40mm. In a hands-on review of the 35mm, Hodinkee’s James Stacey notes that its fixed first bracelet link makes it wear longer than the bare lug-to-lug measurement suggests, and that its butterfly clasp has no micro-adjustment. Those are observations about the 35mm model, not a direct fit assessment of this 40mm reference.
Price context: current U.S. listing versus launch pricing
Tissot displayed the 40mm reference at $850 on its U.S. page accessed October 4, 2026; its 35mm ice-blue automatic alternative displayed at $795 on the same date. These are time-sensitive U.S. listing prices, not assurances of what a retailer or another country will charge.
Rank #4
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For context only, Monochrome Watches reported launch-era prices in 2023 of USD 675, EUR 745 and CHF 675 for the 40mm model. Those historical figures are not current prices.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Is the ice-blue 40mm PRX worth considering?
This reference makes the most sense if you specifically want an automatic PRX with the 40mm case, integrated steel bracelet and a light blue dial with a cool, metallic character. Its stated 80-hour reserve, sapphire crystal and 100m water-resistance rating are useful specifications, but they do not answer the personal questions: whether the case and bracelet suit your wrist, whether you enjoy the dial’s changing reflections, and whether you prefer it to the smaller 35mm option.
Best Value
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- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Tissot lists the supplied bracelet as quick-release and compatible 40mm straps as an alternative, so the bracelet is not the only configuration path. Confirm that any replacement strap is made for the exact 40mm reference before buying; compatibility should not be assumed from the PRX name alone.
Quick Recap
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.
