Tissot PRX Powermatic 80 35mm T137.207.11.041.00

The Tissot PRX Powermatic 80 35mm (ref. T137.207.11.041.00) is the smaller-cased, automatic version of Tissot's integrated-bracelet sports watch, with a blue embossed waffle-pattern dial. It uses a tonneau-shaped 316L stainless steel case, a fixed integrated bracelet, and the Powermatic 80 self-winding movement with an 80-hour power reserve. Introduced in 2023, the 35mm automatic answered demand for a mechanical PRX in a size smaller than the original 40mm.

Tissot first launched the PRX in 1978 as a sports-luxe watch with, per Oracle of Time, "a flat barrel of a case with sharp facets and a signature bracelet with large, flexible links integrated into the case." The watch was initially tied to the Seastar name before the PRX designation stuck. Oracle of Time notes that PRX stands for "Precise and Robust" and incorporates the Roman numeral for ten, referring to ten atmospheres (100m) of water resistance.

The line lay dormant for decades. Oracle of Time reports that current Tissot CEO Sylvain Dolla found the original 1978 PRX in the brand's archives during his first week on the job in 2020, which prompted the collection's return. Tissot relaunched the PRX in 2021, initially at 40mm and in quartz form, with designers using tomography to stay true to the original proportions while enlarging the case.

The automatic Powermatic 80 versions followed, and the smaller case came later. Monochrome-watches, introducing the 35mm Powermatic 80 in 2023, notes that it arrived two years after the PRX's 2021 relaunch and offered the collection in black, blue, green, and white mother-of-pearl dials. Reference T137.207.11.041.00 is the blue-dial example of that 35mm automatic.

The 35mm automatic runs the Tissot Powermatic 80, which monochrome-watches identifies as the caliber Powermatic 80.111, an upgraded derivative of the ETA 2824-2. CaliberCorner describes the base as the ETA C07.111 and explains that the movement's defining feature, an 80-hour power reserve, is achieved "through a more efficient spring barrel and reduced frequency compared to the standard 2824-2's approximately 38-hour reserve."

That trade-off shows in the beat rate. CaliberCorner lists the movement at "21,600 bph / 3 Hz," slower than the 28,800 bph of the standard 2824-2, and notes 23 jewels in the base version, which uses synthetic (plastic) pallet fork and escape-wheel parts marketed as the "High-Tech Escapement." The synthetic escapement is impervious to magnetism.

Tissot's own product page for this reference adds that the movement carries a patented Nivachron balance spring. Swatch Group, which developed the alloy, describes Nivachron as titanium-based and says it reduces the influence of a magnetic field on a watch's running by a factor of 10 to 20, depending on the caliber. The movement is visible through a see-through caseback on this reference.

The 35mm PRX measures 35mm across with a case thickness Tissot lists at 10.93mm, a figure corroborated by Teddy Baldassarre's review. Baldassarre's review measures the lug-to-lug at 39mm and observes that the watch "wears a little larger than its diameter suggests" because of the short lugs and generous dial space. On her wrist, the reviewer writes, the 35mm "really captures the sporty feel of the watch without feeling too bulky or overwhelming," and she notes that the flat midcase meeting angled lugs lets the bracelet follow the curve of the wrist.

Monochrome-watches' comparative review reflects how the size reads across different wrists. Its author, on a 16.5cm wrist, found the 35mm "balanced, proportioned, having this lovely effect of the bracelet wrapping around the wrist." Editor Robin, on an 18.5cm wrist, found it "a bit too small" and preferred the 40mm he owns, though he acknowledged the smaller model still "look[s] good on him."

Monochrome also observed that, in the smaller case, the dial reads "a bit more chubby" than on the 40mm, while noting that the proportions improve once the watch is actually on the wrist. Both reviews position the 35mm automatic as suited to smaller wrists and to buyers who want a mechanical movement in a compact case.

The PRX collection spans quartz and automatic movements across several case sizes. Oracle of Time notes that the revived line includes both quartz and automatic variants, a 35mm size, a 40mm size, and a 42mm chronograph that uses a Valjoux movement and a sapphire caseback. Reference T137.207.11.041.00 sits in the 35mm automatic segment.

Within the 35mm Powermatic 80 line, monochrome-watches lists dial options in black, blue, green, and white mother-of-pearl, all with the embossed waffle pattern. This reference is the blue-dial version. The 35mm automatic shares the Powermatic 80 movement and 80-hour reserve with the 40mm automatic, differing mainly in case size and, per monochrome, a dial that appears slightly fuller in the smaller diameter.

Monochrome quotes European pricing of EUR 745 for the standard 35mm Powermatic 80 and EUR 795 for the mother-of-pearl version, indicating a small premium for the MOP dials over the metal-dial references such as this blue example.

Tissot's US site lists reference T137.207.11.041.00 at $795.00, sold with the integrated stainless steel bracelet, a butterfly clasp with push-buttons, and an interchangeable quick-release fitting that lets the bracelet be swapped without tools. The listing includes a two-year warranty and notes Swiss manufacture, a 316L stainless steel case, and a sapphire crystal with anti-reflective coating.

Teddy Baldassarre's review of the 35mm Powermatic 80 cites a price of $725 for the automatic and describes the quartz PRX as roughly "half the price" for buyers who prefer that movement, which is a consideration for anyone weighing the mechanical version against the cheaper quartz alternative in the same case size.

Because the bracelet uses fixed integrated end links, sizing is done through the bracelet's own links and clasp rather than standard spring bars; buyers should account for that when planning a fit. The quick-release system, per Tissot, does allow the whole bracelet to be exchanged for other quick-release straps.