Ulysse Nardin has been recognized for its perpetual calendars ever since the GMT +/- Perpetual was introduced. Designed by Ludwig Oechslin, the GMT +/- was the first perpetual calendar that could be adjusted both forwards and backwards via the crown without damaging the movement. Ulysse Nardin first introduced the UN-32 manufacture movement, its in-house version of the mechanism, at Baselworld 2014. The new Boutique Edition has a 43-mm platinum case and a blue dial. It has a nonreflective sapphire crystal over the dial and another on the caseback. The watch is water resistant to 30 meters. It comes on a blue leather strap with a folding buckle. It costs $69,500.