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watch

  • Technical
  • Tourbillon
  • Striking mechanism
  • Skeleton

Blast Hourstriker

Ulysse Nardin 2021

ref. 6215-400/02
Men's

Ulysse Nardin takes a characteristically original approach to complications with this chiming watch complete with a flying tourbillon. The sharply angled 45mm case, a combination of black DLC titanium and pink gold, is modelled on the profile of a stealth fighter jet. The main challenges were to move the striking mechanism where it would be visible, on the dial side, and to amplify and improve the quality of the sound. To achieve this, the brand’s watchmakers engineered the complex UN-621 skeleton calibre which allows a view of the gear train as well as the hammers striking the gong, which is shaped to fit around the flying tourbillon at 6 o’Clock. This gong, which sounds the hour and half-hour in passing, is connected to a fine membrane, just 3/10th of a millimetre thick, that amplifies the sound waves. The result is an avant-garde watch that is a marvel for the eyes and for the ears.

Complications

  • Regulating mechanism
    Flying tourbillon
  • Other complication
    See presentation text

Movement

  • Movement name
    UN-621
  • Energy supply
    Self-winding
  • N° of components
    330
  • N° of jewels
    23
  • Power reserve
    60 hours
  • Vibrations
    28800
  • Form
    Round
  • Diameter
    mm

Case

  • Form
    Round
  • Material
    Pink gold / black DLC titanium
  • Diameter
    45.00 mm
  • Back
    Sapphire
  • Water-resistance
    30 m

Dial

  • Material
    Skeleton
  • Colour
    Black / pink gold

Strap

  • Material
    Alligator
  • Colour
    Black