All watchmaker somehow are driven by the quest for precision and intricacy, but just a few can keep up with the manigfoldly honored Jaeger-LeCoultre masterpieces. Among those creations is a member of the high-precision hall of fame, the Calibre 978 that will now also drive the intricate innards of the Grande Tradition à Tourbillon. Its functions include a dual time-zone display and a 24-hour indicator and the Tradition beeps at 28.800 vph, features a 48 hours power reserve, is made of 302 parts while just being a mere 7.05mm thick. The 43m case is made of either the classic 18kt pink gold or platinum and will be accompanied by either a black or brown alligator leather strap.