The Montblanc Heritage Chronometrie ExoTourbillon Rattrapante features a double chronograph with an external tourbillon
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movement Montblanc MB M16.62
Movement Montblanc MB M16.62 | Hand-wound | Diameter: 38.4 mm | Thickness: 12.27 mm | Frequency: 18,000 vph (2.5 Hz) | Jewels: 36 | Parts: 432 | Tourbillon | Plate and bridges: rhodium-plated German silver | Hours, minutes, small seconds, GMT, mono-pusher split-second column-wheel chronograph with elapsed seconds and split seconds, day/night indicator | Power-reserve: 50 hours