Vacheron Constantin Les Cabinotiers Temporis Duo Grand Complication Openface: Inside the Impossible

At its core, Calibre 2757 S brings together three of the most celebrated complications in horology. The split-seconds chronograph, powered by twin column wheels, is set in motion with a single pusher, its green hands capturing time down to a fifth of a second. A 30-minute counter sits at two o’clock, and every component – from titanium wheels to silicon levers – was selected to maximise both precision and elegance.

The minute repeater, a signature of Vacheron Constantin’s acoustic mastery, strikes hours, quarters, and minutes with a clarity achieved through a silent centripetal governor and a delicate system of flyweights. At six o’clock, the tourbillon commands attention: its cage echoes the Maltese cross, balanced by a rare spherical hairspring, with a small seconds hand tracing its path atop the axis – each rotation a subtle display of technical artistry.

Every surface is finished by hand, turning the mechanics into sculpture. Skeletonised bridges, bevelled and drawn, shift between polished brilliance and a soft, frosted sheen. Titanium and nickel-phosphorus wheels catch the light, while black NAC bridges provide dramatic contrast. The governor carries the engraved initials ‘JMV’, a tribute to Jean-Marc Vacheron, its sandblasted field edged in mirror polish. Through the sapphire caseback, the power reserve indicator sits among these quietly obsessive details.

Framing the dial, rings of gold encircle the counters. Hour markers and chronograph scales are inked and applied by hand. The deep green alligator strap, stitched in large squares, fastens to a polished pink gold folding clasp with a Maltese cross motif. The 45mm case stands out with bold presence yet remains refined in profile, while the movement – just over a centimetre high – is a study in miniaturised engineering.

From initial design to final adjustment, a single master watchmaker oversaw every stage – hand-finishing, assembly, regulation – honouring Geneva’s centuries-old tradition of one craftsperson, one masterpiece. Months were devoted to the finishing alone, often twice the hours needed for assembly.

The result is an invitation: to slow down, to notice every layer and nuance, to understand that true innovation in watchmaking comes from the courage to reveal every detail. Here, mastery is never hidden – and every secret is shared with those who look closely enough to appreciate it.

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