In the gold case is inserted with manual winding caliber MBM 16.60. The mechanism is equipped with a chronograph module, provides an indication of hours, seconds, small seconds, second time zone, and supplies energy 4-minute tourbillon. Frequency mechanism – 18,000 vibrations per hour, power reserve -50 hours.
The new model Villeret ExoTourbillon Chronograph from Mont blanc, presented at the annual SIHH watch fair in 2013, has a round body of 18-carat pink (Ref. 109151) or white (Ref. 109150) gold. The original dial is equipped with an additional window at 6 marks with Roman numerals and two hands, several labels have apertures 3, 5 and 9, and a fabulous tourbillon in the “12 o’clock.” Sapphire crystal protects the dial with anti-reflective coating. Water resistant 30 meters.