Five years of research into watch acoustics preceded the launch of this limited-edition piece. The conclusions can be resumed thus: the lower the weight of the case and the wider its diameter, the better its capacity to produce a loud sound.
Polished titanium case, 45 mm diameter, hand-wound calibre 9402MC movement certified with the Geneva Hallmark, 50-hour power reserve, complex open-worked and guilloche dial, sapphire crystal front and back, black alligator leather strap with double adjustable folding clasp in 18-carat white gold.

Source: Europa Star February - March 2012 Magazine Issue