Four years in the making, the U10 Tourbillon Lumière not only upholds the Angelus tradition of creating extremely inventive timepieces boasting finely-finished, in-house movements with long power reserves, it is also a timepiece of glorious contrasts. On one hand the U10 Tourbillon Lumière is classic haute horlogerie. Its dead beat seconds complication – where the second hand advances in full steps of one second – derives from 17th-century high-precision pendulum clocks; the movement bridges and plates are in traditional nickel-silver that is bevelled and polished; and the traditional 2.5Hz / 18,000 vph of the screwed balance with Breguet-overcoil is a throwback to some of Angelus’ early pocket watches. Reference Number: 0LUAS-B01A-C001F