Tissot PRX Powermatic 80 35mm Unisex Watch Black

Ref. T1372071105100

The PRX began life in 1978 as a quartz watch with an integrated bracelet, was shelved, then revived in 2021 — and it was only after that revival that Tissot added mechanical versions. This 35mm reference arrived in 2023, sitting alongside a 40mm sibling and carrying the waffle-pattern dial that marks the automatic line as distinct from the quartz models. The movement beneath that dial is an ETA C07.111 with a Nivachron hairspring, a titanium-alloy component that shrugs off magnetic interference far more readily than a conventional spring. Eighty hours of reserve and a rate of roughly ±5 seconds per day puts it close to COSC territory without the certification. The see-through caseback makes it worth examining. At 35mm the PRX reads compact on paper, but the integrated bracelet's end-links push the real lug-to-lug to around 45mm, so it fills a wrist more than the case diameter suggests. The satin-finish bracelet tapers from 24mm at the case to 16mm at the deployant clasp, giving it a clean taper that keeps the proportions coherent, and the quick-release system means swapping it out takes seconds. Tissot markets this size as unisex, and it wears that way.

Reference

T1372071105100

Brand

Tissot

Case size

35mm

Lug width

24mm

Case material

Stainless steel

Case shape

Tonneau

Dial

Black

Crystal

Sapphire

Movement

Automatic

Calibre

Powermatic 80

Functions

Date

Water resistance

100m

Bracelet / strap

Stainless steel bracelet

Strap colour

Silver

Clasp

Deployant clasp

Lume

Super-LumiNova

Retailer

Goldsmiths