The Armin Strom Tourbillon Skeleton Fire was introduced in 2015. As all 'Water' models in Armin Strom's collection, the case is done in rose gold , while the movement features dark brown (PVD) details.The Tourbillon Skeleton is powered by the in-house, hand-wound caliber ATC11-S with tourbillon escapement at 9:00 and a power reserve of 10 days.