Vacheron Constantin has revealed the Les Cabinotiers Temporis Duo Grand Complication Openface.
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The single-piece edition wristwatch is part of the house’s 270th anniversary celebrations and brings together three of haute horlogerie’s most challenging complications: a split-seconds chronograph, a minute repeater, and a tourbillon regulator.
This unique model showcases the Maison’s Calibre 2757 S, a movement comprising 696 components and measuring just 10.4 mm thick. The calibre has been developed to maximise performance and precision, incorporating advanced materials including titanium, nickel-phosphorus, silicon and aluminium. These innovations reduce friction and weight, contributing to a 50-hour power reserve even when the chronograph is engaged.
The chronograph function is driven by two column wheels, enabling accurate time measurements down to 1/5th of a second. One push-piece at 2 o’clock controls start, stop and reset functions, while a second push-piece at 4 o’clock manages the split-seconds hand. Time is recorded via two central chronograph hands and a 30-minute counter positioned at 2 o’clock.
The minute repeater is regulated by a silent centripetal strike governor, which uses two specially shaped flyweights to ensure consistent energy distribution. This mechanism delivers clear, even chimes with no mechanical background noise.
At 6 o’clock, the tourbillon features a spherical hairspring, which expands and contracts concentrically to enhance isochronism. The tourbillon cage, shaped like the Maison’s Maltese cross emblem, completes one rotation per minute and carries a small seconds hand.
Aesthetically, the timepiece adheres to Vacheron Constantin’s high standards. The 45 mm case is crafted from 5N pink gold and matched with a green alligator leather strap. A transparent 0.5 mm sapphire dial reveals the intricate hand-finishing of the movement, which includes bevelled, polished, frosted and satin-finished surfaces. The dial also features polished counters with grey NAC-treated hour markers and PVD-coated olive green chronograph hands.
On the reverse, a sapphire caseback displays the movement’s architecture. The bridges are coated in black NAC, with sandblasted and mirror-polished finishes. The strike governor bears the initials JMV in tribute to Jean-Marc Vacheron.
As with the Maison’s 18th-century watchmakers, one single craftsman was responsible for the finishing, assembly and casing of this piece. The watch represents not only a technical achievement but also a reaffirmation of Vacheron Constantin’s enduring commitment to traditional horology
