TAG Heuer makes its first Geneva Watch Days a double act

GENEVA WATCH DAYS (4–7 September 2025) is usually where watchmakers show their wild side. This year, TAG Heuer is making its debut – and, true to form, it isn’t easing in quietly. The brand is unveiling two creations that couldn’t be more different: one rooted in hard science, the other in stargazing.

The headline innovation is the TH-Carbonspring. A hairspring made entirely in-house after nearly a decade of research. It’s not the kind of thing you notice at first glance, but in horology, it’s game-changing. Lighter, tougher, and immune to magnetism, it regulates a watch in ways the industry has been chasing since the days of steel and silicon.

Naturally, the technology makes its debut in the brand’s icons: the Monaco Flyback Chronograph and the Carrera Chronograph Tourbillon Extreme Sport, both limited to just 50 pieces.

If Carbonspring is about the mechanics of time, the second release is about the poetry of it. The Carrera Astronomer reimagines the moonphase with striking clarity. At six o’clock, a rotating disc tracks the lunar cycle with near-scientific accuracy, transforming what has long been a romantic flourish into something precise and contemporary.

Available in three versions – steel, steel with turquoise accents, and a rose-gold two-tone limited edition – it nods to TAG’s history in space (John Glenn wore a Heuer stopwatch on his 1962 orbit) while pointing firmly to the future.

Together, the launches show TAG flexing both sides of its personality: the engineer and the dreamer, the racetrack and the observatory.

And at Geneva Watch Days, it’s proof that avant-garde watchmaking still has plenty of ground, and sky, to cover.

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