Assembling the components of the JCFM03 hand-wound movement for the Jacob & Co. Twin Turbo is no easy task. This includes the placement of the two triple-axis tourbillions, which are the most complicated, technically most challenging and visually most encapsulating among all tourbillons. The complexity of the movement is further defined by the decimal minute repeater, among the most prized complications by collectors. In the video the cathedral gongs sound the time as 11:43. No other watch has ever combined these two complications.
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