Manufacture Zenith’s famous star symbol shines more brightly than ever with a fusée-chain mechanism a constant-force energy supply. Combined with the patented gravity control system already featured in the previous Academy Christophe Colomb model, the new driving-force device endows the  movement with a degree of isochronism verging on perfection. The cone-shaped fusée compensates for the variations in the force of the barrel that generally occur when the movement’s energy level rises or falls. Transmission between the barrel and the fusée of the Academy Christophe Colomb Hurricane is ensured by a highly complex 585-part, 18 cm-long chain visible on either side of the hands and featuring double and intermediate links alternating around cleverly designed rivets. The chain takes over 50 hours (corresponding to the power reserve) to wrap itself around the barrel and arm its mainspring. As for the famous self-regulating gyroscopic mechanism, it stands out in spectacular fashion beneath the domed part of the sapphire crystal at 6 o’clock, framed by the hand-guilloché small seconds and power-reserve subdials. On the back, a laser-engraved globe motif appears enthroned amid the superb finishing of this exceptional calibre.