Jaeger-LeCoultre Master Grande Tradition Tourbillon Cylindrique à Quantième Perpétuel

Unveiled at SIHH 2015, the Master Grande Tradition Tourbillon Cylindrique à Quantième Perpétuel from Jaeger-LeCoultre demonstrates its comprehensive and high precision features through the sophisticated association of a flying tourbillon and a perpetual calendar. Also as a tribute to astronomy, it faithfully reproduces celestial movements like the earth’s rotation around the sun, along with moon phases and zodiac decans.

Faithfull to the astral theme adopted by Jaeger-LeCoultre in the year 2015, the deep blue grained dial of this complication wristwatch invites to discover the mystery of the celestial canopy. The immaculate moon phase indication is displayed by an immobile disc made of lapis lazuli, a stone whose Persian name means “azure blue”. The lunar cycles appear as visible from the earth and are indicated by a hand.

The most striking new feature of this edition lies in a new stellar indication –zodiac signs – appearing on the counter at 12 o’clock. By indicating the 12 signs through which the sun travels in one year, along with a year indication corresponding to the earth’s rotation around the sun, as well as the moon phases, months and days, the Master Grande Tradition Cylindrique à Quantième Perpétuel provides an extremely comprehensive transcription of the movements of the heavenly bodies.

Perpetual Calendar

The mechanical perpetual calendar, a complex mechanism capable of indicating the days, months and years, consumes a lot of energy while taking account of the varying lengths of each month and of leap years. The interaction between the multiple gear trains of a perpetual calendar generally results in a loss of precision. Such is not the case with the Master Grande Tradition Tourbillon Cylindrique à Quantième Perpétuel, thanks to its ingenious association with the ultra-powerful tourbillon developed by Jaeger-LeCoultre.

The second distinctive feature of this perpetual calendar is the clear perfectly readable calendar indications. Day, month and date displays appear in a traditional manner on three counters, with the 3 o’clock one also providing a moon-phase display.

Further, the Master Grande Tourbillon Cylindrique à Quantième Perpétuel has been designed by the Manufacture to ensure smooth handling and optimal adjustment by means of a single push-piece. The entire set of indications is “programmed” in the movement. Simply setting the correct date automatically adjusts the month, year and moon-phase indications. This watch in run requires no manual correction before March 1st 2100.

Fixed on its lower side only, the tourbillon of the Master Grande Tradition Tourbillon Cylindrique à Quantième Perpétuel is an authentic feat that one never tires of admiring. Its titanium case houses a gold balance, as well as the cylindrical balance spring developed by the Jaeger-LeCoultre teams and of which the consistently concentric beat guarantees peerless chronometric precision.

A valuable asset for a construction so light and airy that it appears to be actually levitating. The architecture of the watch further accentuates this impression of complete autonomy, by working with different dial levels to create a three-dimensional effect. The majestic tourbillon performs its steady rotations in almost total freedom.

Historical Heritage
The history of Jaeger-LeCoultre is written on each face of this model, as much in its classic and aesthetic design as in its beating heart admirably illustrating the technical mastery cultivated by the Grande Maison. This creation houses both the fastest complication – the spring balance beating at a rate of 8 vibrations per second – and the slowest – the tens of year disc making a full turn in 100 years. It takes a certain state of mind combined with potent expertise to combine the two within a watch driven by a mechanical automatic movement. However spectacular, this alliance is driven by a single minded ambition: to deliver exceptional chronometric precision to the person who will make this watch their lifelong companion.

This model clearly proclaims its kinship with classic aesthetic traditions: the shape of the white gold case evoking historical pocket watches, the traditional minute circle, the dauphine-type hands, the dial with its grained finish, as well as the hand-crafted decorations, are all unmistakable signature features of a timepiece entirely in keeping with the precepts of Haute Horlogerie.

The Master Grande Tradition Cylindrique à Quantième Perpétuel offers a final source of delight to all those who will be fortunate enough to contemplate its 22-carat oscillating weight visible through the back of the watch. This superbly engraved component bears a reproduction of the gold medal won by Jaeger-LeCoultre at the Paris Universal Exhibition in 1889.

Technical details
Model: Jaeger-LeCoultre Master Grande Tradition Tourbillon Cylindrique à Quantième Perpétuel
Reference: Q504 35 80

Mechanical automatic movement, Jaeger-LeCoultre Calibre 985, crafted, assembled and decorated by hand
45-hour power reserve
28,800 vibrations per hour
431 parts
49 jewels
8.25 mm thick
30.7 mm in diameter

Grained blue, polished silver-toned baton-type appliques and traditional transferred minute circle
Hands: Dauphine-type

Hours, minutes, small seconds indication on the flying tourbillon
Perpetual calendar: Indication of the date, day, month, year, red zone and moon phase
Zodiac signs

18-carat white gold
13.1 mm thick
42 mm in diameter
Polished lugs and satin-brushed sides
Water-resistance: 5 bar

Hand-sewn high-end alligator, 18-carat white gold pin buckle

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