Montblanc Heritage Chronométrie Dual Time
Introduced at SIHH 2015 luxury watch exhibition, this timepiece is equipped with a complication that was developed in-house by Montblanc, which enables it to simultaneously display a second zone time (local time) along with the time in its wearer’s home time zone. This feat is achieved with the aid of a second hour-hand that can be reset in hourly increments without affecting the position of the first hour-hand.
The date display also corresponds to this local time hand. If the user does not need to display the second zone time, the second hour-hand can be set so that it completely covers its counterpart for the time in the home zone. The 24-hour display at “12 o’clock” shows the home time with a day and night indication.
All indicators are set exclusively thanks to the crown. For example, to set the time for a zone time that is six hours behind the current setting, the watch’s owner withdraws its crown to the first extracted position and then turns it to reposition the hour-hand six hours back to set the new local time.
The crown conveys a palpable sensation each time it triggers the hour -hand to progress through a one-hour increment and toward the new zone time. Neither the minute hand nor the second-hand is affected by this resetting: both continue to run uninterruptedly, thus preserving the exact time.
After manual resetting has been accomplished, the user recloses the crown by pressing it inward to its original position. The new local time can now be read from the dial and the date corresponds with the new zone time. The other hour-hand remains unaffected by this and continues to show the home time. The 24-hour display at “12 o’clock” serves as a day/night display for the home time.
The Manufacture module that Montblanc developed for the Dual Time mechanism consists of only 21 components. The overall height of the 41-mm-diameter case in stainless steel is an elegantly slim 9.9 mm. The bezel has a flat surface that’s alternately polished and satin-finished. The horns are rounded.
Built from three parts, the bright silvery white dial is adorned with a sunburst pattern and bears eleven facetted applied indexes and a prominent numeral “12”.
The leather wristband is crafted at the Montblanc Pelletteria, the Maison’s own leather manufacture in Florence, Italy. The new and uncommonly flat double folding clasp secures the strap.
Technical details
Model: Montblanc Heritage Chronométrie Dual Time, Ident. 112540
Movement
Calibre MB 29.19 with Manufacture complication
Mechanical movement with automatic winding, second time zone and day/night display
Number of rubies: 34
Power reserve: Approx. 42 hours
Balance: Flat hoop
Frequency: 28,800 A/h (4 Hz)
Hairspring: Flat
Displays
Local time: central hours and minutes, small seconds at 6 o’clock, second time zone in the centre and at 12 o’clock with 24-hour display and a day/night indication
Date window at 3 o’clock
Special features
In-house-developed complication with rapid adjustment of the local time in hourly steps, date linked to local time with date change either forward or backward, home time, minutes and seconds continue to run during local-time adjustment Habillage
Case
Polished stainless steel case, polished and satin-finished bezel
Crystal: Scratch-resistant, domed and antireflective sapphire crystal
Back: Stainless steel with inset pane of sapphire crystal
Diameter = 41 mm; height = 9.97 mm
Water-tightness: 3 bar
Crown: Stainless steel with Montblanc emblem in raised relief
Dial
Silvery white dial with sunburst pattern, facetted indexes, Arabic numeral “12” as rhodium-plated appliqués, rhodium-plated sword-shaped hour-hand and minute-hand, blued steel hour-hand for the second time zone, the 24-hour and the day-night indicators, rhodium-plated small seconds, date shown in a window
Wristband
Black alligator-skin strap crafted at the Montblanc Pelletteria in Florence with stainless steel triple folding clasp
Certification
Certified by the Montblanc Laboratory Test 500
Price
3’990 Euros
