Ulysse Nardin Blast Dual Time

The Ulysse Nardin Blast Dual Time, reference 243-20/42, is a GMT watch with a 42 mm steel case and an alligator leather strap. At 10.05 mm thick, the case has a water-resistance rating of 50 metres. Self-winding calibre UN-24 runs at 28,800 vibrations per hour with a power reserve of 42 hours. The black dial has a big date and small seconds beneath a sapphire crystal. The watch has a patented instant time zone adjustment. The second time zone has a patented Home Time indicator at nine o'clock.