Mont Blanc Twin Fly
Mont Blanc Twin Fly In 2011, Montblanc unveiled the Montblanc TimeWalker TwinFly Chronograph, which contains a caliber called the MB LL100. The movement has an unusual feature: a center-mounted elapsed-minutes hand. Such hands were common until the mid-1970s, but have since become rare. Rarer still: the elapsed-minutes hand, like the elapsed-seconds hand, is a flyback hand. This feature is the source of the name “TwinFly.” The MB LL100 has certain features in common with Montblanc’s MBR chronograph calibers, which are used in the brand’s Rieussec watches. (Launched in 2008, their most notable feature is the two rotating disks used to display elapsed seconds and minutes.) These features include the gear train’s translations, the subassembly for the escapement, the column wheel and vertical disk coupling for the chronograph, the setting devices for the time-zone display and date and the movement’s two serially arranged barrels.