In short Cartier has refined the case of the Tank Américaine by making its curved shape and brancards
link sides just a little finer and curvier. The large version also houses a new caliber 1899 MC which Cartier says is thinner than its previous automatic movements. It shows in the case
link dimensions The new large Tank Américaine is 8.6mm in thickness down from the previous generation's 9.5mm. The
link small and mini Américaine both use quartz movements.