The magnificent Histoire de Tourbillon 3 timepiece from Harry Winston is a sight to behold. It unites three tourbillons with delicate intricacy. To reduce the use of power from the single tourbillon, its double tourbillon system is made from titanium and aluminium alloys. The resulting effect enables the Histoire de Tourbillon 3 to have a power reserve of 50 hours. The complex design of the watchcase is constructed of 77 parts in white gold and sapphire crystals. Furthermore, its case band and lugs are made from Zalium, an alloy that is used in jet engines for its resistance to corrosion.