Pre-SIHH 2018: Vacheron Constantin Overseas Dual Time

The new Hallmark of Genevacertified Vacheron Constantin Overseas Dual Time, that will be presented at the SIHH 2018 next January, seems to be a clever travel companion.

It meets the horological hurdle of being a practical wristwatch for traveling. 

So far I did not have the watch in my hands, I only got the technical description of the new developed calibre and these pictures …

What is a practical wristwatch for traveling? 

I invite you to read this short presentation of the¬†Overseas Dual Time …

Vacheron Constantin Overseas Dual Time

The one and only question I ask when I get to see a new watch that was conceived for traveling is: Can I, when traveling through timezones with changing zone-times, adjust my local time without loosing the correct indicated minutes and seconds? In case of the new Vacheron Constantin Overseas Dual Time you can. The watch will independently indicate you your home-time and the date is of course linked to the local time.

You think every ticking travel companion does this? Unfortunately not! I could name you several really expensive watches that had not been thought through correctly …

The description of the new developed 5110 DT calibre tells us the following:

… “The hours hand indicates the local timezone corresponding to the user‚Äôs current location, while the hand tipped with a triangular arrow shows the time in a reference timezone, generally known as ‚Äúhome time‚ÄĚ. A 12-hour display, adjustable via the crown in both directions (position 1: local time, independent jumping adjustment; position 2: home time, dragging adjustment of both timezones and minutes), along with a day/night indication set to home time, and a pointer-type date display, adjusted and secured via a screw-lock pusher at 4 o‚Äôclock and synchronised with local time.” …

So if understand this correctly the Vacheron Constantin Overseas Dual Time meets the horological hurdle of being a practical wristwatch for traveling.

Everything else simply is not usable when you travel. If you loose the indicated minutes and seconds when trying to set your local time according to your new zone-time, simply forget the watch. The mechanism of the watch must enable you to set the hours in one-hor-steps while the minutes and seconds continue to run.  

If I travel from Vienna to New York, the only thing I need to do is pull out the crown and turn back the hour-hand¬†in six single steps. Lock the crown again and enjoy New York …¬†

TECHNICAL DATA of the Hallmark of Geneva certified Vacheron Constantin Overseas Dual Time in steel.

Since the technical data of the 18 carat 5N pink gold model only differ by the case and strap material I only show the ones of the steel watch.


7900V/110A – B334 – blue dial

7900V/110A – B333 ‚Äď silver – toned dial


5110 DT

Developed and manufactured by Vacheron Constantin

Mechanical, self-winding

22K gold Overseas oscillating weight

30.6 mm (13 ¬ľ ‚Äô‚Äô‚Äô) diameter, 6 mm thick

Approximately 60 hours of power reserve

4 Hz (28,800 A/h)

234 components

37 jewels

Indications hours and minutes

Central seconds

Second zone-time , set by the crown

Day/night (AM/PM) indication at 9 o’clock, synchronised with home time

Date at 6 o’clock, synchronised with local time, set by pusher


Stainless steel

41 mm diameter, 12.8 mm thick

Soft iron casing ring ensuring anti-magnetic protection

Screwed-down crown and quarter-turn screw-lock push-pieces

Transparent sapphire crystal caseback

Water-resistant tested at a pressure of 15 bar (approx. 150 metres)


Translucent blue /silver-toned lacquered, sunburst satin-finished base with velvet-finished flange

18K white gold hour-markers and hours & minutes hands highlighted with white luminescent material 


Steel bracelet, half Maltese cross-shaped polished and satin-brushed links

Delivered with a second strap in blue /black Mississippiensis alliga tor leather featuring a black nubuck lining with a micro-perforated effect, hand-stitched, large square scales

Delivered with a third strap in blue /black rubber


Stainless steel bracelet secured by a stainless steel triple-blade folding clasp with push-pieces and comfort-adjustment system

Delivered with a second stainless steel triple-blade folding clasp with push-pieces and patented interchangeable system compatible with both additional straps 


Overseas Dual Time / Hallmark of Geneva certified

Steel 7900V/110A-B334 – blue dial | 25,200 ‚ā¨ (RSP in Germany including 19% VAT)
Steel 7900V/110A-B333 ‚Äď silver-toned dial | 25,200 ‚ā¨ (RSP in Germany including 19% VAT)
18 carat 5N Pink Gold 7900V/000R-B336 | 40,300 ‚ā¨ (RSP in Germany including 19% VAT)