Ulysse Nardin Blast Tourbillon Dragon

Ulysse Nardin's Blast Tourbillon Dragon, reference 1725-400-2A/1A, has a 45 mm case in titanium and gold. The case measures 12.6 mm thick and the dial sits under a sapphire crystal. Its "Dragon" dial pairs with a flying tourbillon at the movement's centre, built around the self-winding calibre UN-172. This runs on a silicon escapement with 25 jewels and stores 72 hours of power reserve. The watch is fitted to a gummy-effect alligator leather strap. Water resistance reaches 50 metres, adequate for a watch built around fine finishing rather than diving.