One good reason for the date is the manufacture-made caliber UN-320, a signature of this collection. Sure, Ulysse Nardin could tweak the movement or develop something new, but then we end up with a very different watch entirely. In any case, the UN-320 an impressive movement, with a silicon hairspring and Ulysse Nardin’s hallmark anchor escapement, and a moderate 48-hour power reserve. It’s visible through the caseback, where it becomes clear what we have here is another small movement in a big case. The maritime theme continue on the rotor, which is engraved with rows of waves.