This Set-It-and-Forget-It Watch Stretches the Limits of Mechanical Watchmaking

We watch enthusiasts love mechanical watches for their craftsmanship, history and romantic charm, not their practicality. In most cases, a cheap quartz watch will be more accurate and require less maintenance, offering a “grab-and-go” alternative to complex mechanical watches.

But what if a mechanical watch solved two of the biggest drawbacks of the category in making a watch that you almost never have to set or even wind?

That’s exactly what Vacheron Constantin has accomplished with its updated Traditionnelle Twin Beat Perpetual Calendar.

Vacheron Constantin

Set it and forget it

Vacheron Constantin is no stranger to producing world-beating complicated watches. The world’s oldest continuously operating watch brand currently owns the records for the most complicated wristwatch and pocket watch ever made. Its latest creation, while a bit less complicated than those record-breakers, is definitely more practical.

The Traditionnelle Twin Beat Perpetual Calendar is, obviously, a perpetual calendar. It simultaneously tracks the month, date and leap year, with each of the three displays engineered to instantaneously “jump” when it’s their time to switch over.

Because perpetual calendars automatically adjust for leap years, their dates never need to be reset as long as the watch remains wound. But therein lies the problem.

Vacheron Constantin

Perpetual calendar movements, especially those with jumping displays, require a lot of power. Most only have a few days’ worth of juice when fully wound, so if you forget to wear your watch for a few days, or maybe leave it at home while on vacation, you’ll have to go through the lengthy resetting process when you’re ready to wear it again.

But not with the Traditionnelle Twin Beat Perpetual Calendar. The original version of the watch, which Vacheron launched in 2019, boasted a ludicrous power reserve of 65 days. The new version is even more absurd, fitting in another full work week for a complete power reserve of 70 days.

So how does VC pull this off? Well, the watch’s newly optimized Calibre 3610 QP movement features two escapements oscillating at different frequencies. One beats at an “Active” high-beat frequency of 5Hz and is meant for times when the watch is on your wrist, while a far lower 1.2Hz “Standby” frequency is intended to be used when the watch is at rest.

Vacheron Constantin

Both escapements are connected to a coaxial double mainspring barrel by their own dedicated gear train. Pressing the pusher on the side of the case at 8:00 switches between the two escapements, with a display at 9:00 on the dial indicating which mode is currently selected.

The Standby mode will accurately keep the perpetual calendar running as long as the watch lies flat, but it’s not intended to be worn, as its slow frequency is too delicate and susceptible to disturbances. If left in Active mode, the power reserve drops to just four days, so switching to Standby mode whenever you remove the watch is advisable.

The movement, which has 480 components but measures just 6mm thick, is packed into a 42mm x 12.3mm platinum case and features an impressive multilayer dial that combines a hand-guillochéd 18k white gold upper half with an openworked lower half featuring transparent sapphire subdials.

Vacheron Constantin

The central time display is tracked via dauphine hands and applied markers in white gold, while a power reserve indicator displaying the balances for both escapements appears at 12:00. Date and month are tracked on disc displays at 8:00 and 4:00, while the year (1–4) is displayed in a window at 6:00.

The open sapphire caseback showcases the heavily decorated reverse side of the movement, with both escapements and the mainspring barrel all visible. The watch is mounted on a sporty black calf leather strap with a Cordura-like texture, red stitching and a platinum pin buckle.

Availability and pricing

As one of Vacheron’s halo products, the new Traditionnelle Twin Beat Perpetual Calendar isn’t exactly accessible. The price is only available upon request, ane while the watch isn’t technically a limited edition, I don’t expect VC to pump out a ton of these.

Vacheron Constantin

Vacheron Constantin Traditionnelle Twin Beat Perpetual Calendar

Specs

Case Size	42mm
Movement	Vacheron Constantin Cal. 3610 QP manual-wind perpetual calendar
Water Resistance	30m

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