Ulysse Nardin Blast Tourbillon Sparkling

The Ulysse Nardin Blast Tourbillon Sparkling, reference 1720-400BLE-3A/00, has a 45 mm white gold case, a flying tourbillon and a 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, with a frequency of 18,000 vibrations per hour. The white openworked dial displays hours and minutes beneath a sapphire crystal. The bezel and the dial are set with diamonds. The watch is a limited edition of 3 pieces. The lugs have a tessellated geometric construction. The regulating cage has an X-shaped construction.