Montblanc Heritage Chronométrie Exo Tourbillon Minute Chronograph

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Ident No. 112542

The Montblanc Heritage Chronométrie Exo Tourbillon combines two of the most important chronometric complications: a chronograph and a revolutionary tourbillon with a stop-seconds mechanism. As the Greek prefix “exo” hints, its balance has been separated from the rotating cage. No longer adversely affected by the inertia of the cage, the balance wheel oscillates with greater isochronism. Developed and crafted entirely in house, the Manufacture Caliber MB R230 features a second complication: a monopusher chronograph with a vertical clutch, a column wheel and a double barrel.

Movement

Movement Type
Automatic monopusher chronograph, 1-minute Exo Tourbillon with stop seconds
Calibre
Manufacture Caliber MB R230
Balance
Screw balance, Ø 9.7 mm; 12 mg.cm²
Power Reserve
Approx. 50 hrs
No. of components
230 components
Frequency
21,600 vibrations per hour (3 Hz)
Balance Spring
Flat hairspring
Plate
Rhodium-plated and circular-grained plates
Bridges
Rhodium-plated bridges with Geneva stripes
Going Train
Wheel train with special toothing for a more efficient power transmission

Case

Material
18 K red gold
Dial
Silvery-white dial with red gold-coated indexes and numerals
Bezel
Fixed, 18 K red gold
Sapphire Crystal
Domed sapphire crystal with double anti-reflective coating
Crown
Non-screw crown, 1 O-ring, 18 K red gold
Hands
18 K red gold-coated sword hands
Height
14.79 mm
Diameter
44 mm
Water Resistant
3 bar (30 m)

Bracelet / Straps

Material
Alligator-skin strap
Colour
Black
Clasp / Buckle
18 K red gold pin buckle

Weight

154.0

TRADITION TO CREATE LUXURY WATCHES
Switzerland is long the home of finest watchmaking traditions. In Montblanc’s Le Locle and Villeret Manufactures in the Swiss Alps, superbly intricate movements are crafted in house by master watchmakers to form the heart of every chronograph. Innovative complications and exquisite adornments are meticulously shaped with skill and dedication to perfect each watch. From hairspring and balance bearing to pallet fork, in over 300 hours of dedicated focus all the elements are brought into singular harmony, and with the first turn of its movement, a watch comes to life and a journey begins.

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From Montblanc with compliments