Ulysse Nardin Blast Tourbillon Rainbow

The Ulysse Nardin Blast Tourbillon Rainbow, reference 1723-400B1LE-2B-RAIN/1A, has a 45 mm titanium case with a black DLC coating, a flying tourbillon and an alligator leather strap. At 12.6 mm thick, the case has 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 black openworked dial displays hours and minutes beneath a sapphire crystal. The watch is a limited edition of 50 pieces. The dial is set with diamonds, while rubies and baguette sapphires decorate the bezel.