The PRX Powermatic 80 Carbon is the most technical PRX Tissot has made. Its case is forged carbon, a material that is pressed from carbon fiber so that every case shows a slightly different marbled pattern, which means no two watches look exactly alike.

Carbon also changes the way the watch wears. At around 75 grams, it is dramatically lighter than a steel PRX, and the black rubber strap keeps it comfortable during sport or travel. The movement is Tissot's Powermatic 80 with a silicon balance spring, offering an 80-hour power reserve and strong resistance to magnetism, and it can be seen through the transparent caseback. A black carbon dial matches the case for a stealthy, fully blacked-out look.

The case measures 40.5mm across and 11.23mm thick, a touch broader than the steel 40mm. It is the PRX to pick if you want something sporty and modern; note that it uses its own dedicated strap rather than standard PRX 40 bracelets.

Forged Carbon PRX Powermatic 80: T137.907.97.201.00

• Case: 40.5mm forged carbon with 316L steel components, 11.23mm thick
• Lug width: 12mm; weight about 75 g
• Movement: Swiss automatic Powermatic 80 with silicon balance spring
• Power reserve: 80 hours
• Dial: black carbon, index markers, date, luminous hands
• Crystal: sapphire with antireflective underside; see-through back
• Water resistance: 100 meters
• Strap: black FKM rubber with buckle, quick-release

Lightweight, one of a kind and all black: the PRX in its most modern form.