Vacheron Constantin Traditionnelle Twin Beat Perpetual Calendar: Malaysia Price And Review

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Vacheron Constantin powers on with a new innovation.

Vacheron Constantin Traditionnelle Twin Beat Perpetual Calendar

In a world where there’s growing concern about conserving energy, it’s no surprise the horological world has caught on. In fact, one of the most innovative (not to mention practical) complications we’ve seen this year at SIHH has to be Vacheron Constantin’s Traditionnelle Twin Beat Perpetual Calendar.

Put simply, the watch uses two balance wheels beating at two different frequencies. One vibrates at a high frequency of 5Hz per hour, while the other vibrates at a low frequency of 1.2Hz per hour. Far from playing a game of technical one-upmanship, the Twin Beat function has great practical purpose.

As we know, mechanical watches have a fixed power reserve, determined by the stored energy of the mainspring. Once that runs out, the watch stops unless it gets wound up again. For timepieces like perpetual calendars, this means every other function stops as well, and having to reset everything can frankly be quite daunting.

Vacheron Constantin Traditionnelle Twin Beat Perpetual Calendar

Here’s where the practicality of Vacheron Constantin’s Twin Beat function comes in. A pusher at eight o’clock allows the wearer to switch from high to low frequencies. While you’re wearing the watch, you can activate the high frequency mode to juice it up for all the functions it needs to run. At full charge, the watch will give you about 4 days of power reserve in this Active mode.

When you’re not wearing the watch, switch it to Standby mode for a lower frequency of 1.2Hz. This allows all the functions of the watch to be maintained even though you’re not actively using it. In this mode, the watch has a power reserve of up to 65 days on a full charge. That’s more than two months! When you wish to wear the watch again, just switch it back to Active mode and it’ll be as though you never took it off.

Vacheron Constantin Traditionnelle Twin Beat Perpetual Calendar

The movement is built on a system that allows only one balance to oscillate at any time. And although the watch runs on a double oscillator, it is powered only by a single barrel, which watchmakers have determined is the most efficient way of distributing power and allow for a single power reserve indication.

Interestingly, the Twin Beat system was inspired by Japanese clocks from the Edo period. Back then, day and night were divided into six periods with varying lengths determined by the different seasons. Clocks at that time were endowed with a single or double foliot balance, which allowed for changing operational speeds.

The aesthetics of the watch is another fine example of combining the traditional with a sense of modernity. While robust, the case is given a matte polish with smooth, straight lines and edges, offering a masculine touch with a generous dose of elegance.

The dial, though, is hardly traditional at all. Coated in slate grey, it’s a modern interpretation of an openwork dial. Frosted sapphire sub-dials indicate the month and date while a single power reserve indicator sub-dial is clearly positioned at 12 o’clock. A window at nine o’clock allows you to see which mode you’re in, with black referring to Active mode and red indicating Standby mode, corresponding to the colours on the power reserve indicator.

Of course, such innovation doesn’t come cheap but, then again, the watch’s functionality and good looks are really quite priceless and worth saving up for.


42mm platinum


See-through sapphire crystal dial with three sub-dials and two indicators, white gold luminous hour indexes and dauphine hands


Manual-winding Calibre 3610 QP


Mississippi Alligator


Hours, minutes, date, month, leap year, power reserve indicator, frequency indicator

Power Reserve

Active mode - 4 days
Standby mode - 65 days



Leong Wong

Editor, CROWN Malaysia

A familiar face in Malaysia's horological publishing scene, Leong has been involved in lifestyle journalism since the mid-1990s. Besides watches, he takes a keen interest in cars and men's fashion.

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