Maybe it should have been called the Twin Tourbo for its unique
complication, but the new limited-edition Twin Turbo model by Jacob
& Co. also has a resolutely sporty look that fits the name, which is
inscribed prominently with a red T, along the bottom of the case.
Incorporating stainless steel, titanium and carbon into the design of
the highly distinctive case reinforces the sporty theme. The exclusive
manually wound JCFM01 calibre inside it has taken two years to develop
and, in addition to its twin tourbillons, boasts a cathedral gong
minute-repeater that strikes the ten minutes rather than the usual
quarter hours
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Source: http://en.worldtempus.com/article/new-watches/jacob-co-twin-turbo-2453719