A super-complex clock that can really be used for bold open work! ── Vacheron Constantin "Traditional Complete Calendar Open Face"

18KWG case x alligator strap, self-winding, 41mm diameter, 5,632,000 yen.

Vacheron Constantin has released a new complete calendar "Traditional Complete Calendar Open Face" with "day", "day of the week" and "month" displays. There are two models, 18KWG and 18KRG cases, and the price is 5,632,000 yen. [See the photo] A complete calendar that stands out! (12 sheets in total)

Both design and practicality are compatible at a high level

Vacheron Constantin has added a new work to the "Traditional" collection, which inherits the spirit of the watchmakers who were active in Geneva during the Enlightenment era. By using sapphire crystal for the dial, it is a "traditional complete calendar open face" that allows you to see the movement of the calendar mechanism from the dial side. A calendar with only a date on a wristwatch is called a "date", a calendar that displays the date + day of the week is called a "day-date", and when a month display is added here, a calendar with all the elements, that is, a "complete calendar" is called. Depending on how often the calendar is modified, there are cases where "roles" such as "annual" and "perpetual" are added, but basically there are three types of calendar display. And if there are three calendars, it will be easier to show the individuality of each brand in the design. Everything can be displayed as a pointer, or a disc can be used. In the case of the pointer type, the needle can be made into a retrograde type, and in the case of the disc type, the size of the display can be differentiated from other companies.

In Vacheron Constantin, the usual non-genuine complete calendar is the traditional combination of a disc-type day and month with a pointer-type date display that goes around the dial. However, while following the rules of the Vacheron Constantin complete calendar, the "Traditional Complete Calendar Open Face" announced in December last year stands out. As mentioned at the beginning, the new work can enjoy the movements of these three calendars and moon phases from the dial side as well. For example, take a look at the day and month discs. It makes one lap in one hour, that is, it decelerates from the gear that turns the minute hand via the intermediate car, and finally the calendar is switched by turning the kana with 7 teeth for the day of the week disc and 12 teeth for the month disc. Can be seen. The new work, which has a three-dimensional index and hands, is free from the difficulty of reading the time that many transparent dial models tend to fall into. The contrast between the anthracite gray endpaper ring and the applied index on it is so strong that you will not lose sight of the tip of the needle. Also, the thick Dauphin hands themselves will not be buried in the dial under strong light sources. This is a good example of a watch that has both design and practicality. Finally, I would like to mention that the moon phase placed at 6 o'clock is highly accurate. As for how high the accuracy is, the normal moon phase has an error of about 44 minutes in one month, that is, an error of about one day in three years, while an error of about one day in 122 years. The power reserve is about 40 hours, which is a little unpleasant, but since it is self-winding, there is no problem if you wear it once every two days. In order to take advantage of the high-precision moon phase, I would like to wear it frequently and not stop the watch.

VACHERON CONSTANTIN Traditional complete calendar open face 18KWG case x alligator strap, self-winding, 41mm diameter, 5,632,000 yen. VACHERON CONSTANTIN Traditional complete calendar open face 18KPG case x alligator strap, self-winding, 41mm diameter, 5,632,000 yen. Vacheron Constantin TEL: 0120-63-1755 https://www.vacheron-constantin.com/jp/ja

Sentence, Yuto Hosoda