Ulysse Nardin Blast Tourbillon

The Ulysse Nardin Blast Tourbillon, reference 1725-400-3A/3A, has a 45 mm titanium and 18k gold case, a flying tourbillon and a velvet rubber strap. Measuring 12.6 mm thick, the case carries a water-resistance rating of 50 metres. Self-winding calibre UN-172 contains 25 jewels and runs at 18,000 vibrations per hour. The movement has a power reserve of 72 hours and a silicon escapement. The regulating cage has an X-shaped construction. The blue openworked dial displays hours and minutes beneath a sapphire crystal.