Renowned pen company Montblanc has unveiled its new watch – Montblanc Tourbillon ‘Bi-Cylindrique’. The mechanism has a rotating cage, and its tourbillon has a see-through mystery dial with two cylindrical balance springs. It features two cylindrical hairsprings used in high-precision marine chronometers to navigate at sea in the earlier days. It has an open dial showing the artful mechanism. The watch comes in white and red gold, priced at $360,300 and $296,800, respectively. What makes it really special is that only eight of each will be made.