Ulysse Nardin Blast Tourbillon

The Ulysse Nardin Blast Tourbillon, reference 1723-400/BLACK, has a 45 mm titanium case with a black DLC coating, a flying tourbillon and an alligator and rubber strap. Measuring 12.6 mm thick, the case carries a water-resistance rating of 50 metres. Self-winding calibre UN-172 has a power reserve of 72 hours, a silicon escapement and 25 jewels and runs at 18,000 vibrations per hour. A platinum micro-rotor is visible from the front at 12 o'clock. The regulating cage has an X-shaped construction. The lugs have a tessellated geometric construction. The openworked dial displays hours and minutes beneath a sapphire crystal.