The ref. 730.032 1815 Tourbillon - with its massive tourbillon at 6:00- was introduced at SIHH 2014. It's caliber L102.1 features hacking, zero-reset seconds; when the crown is pullend the balance stops and the seconds hand resets to twelve, allowing for precision adjustments. Ref. 730.025 is its platinum (and limited) sibling.