Inspired by predecessor models from the 1940s and 1950s, this new perpetual calendar is modern yet vintage. And truly timeless —the perpetual calendar function allows the watch to keep accurate date and time almost perpetually, accounting for the different days of the month, in addition to leap years. It’ll only need adjusting in 2100 when the leap year is discounted. The watch, powered by the calibre 342 SQ, has an 18-carat white gold case, a cream lacquer dial and gold applied numerals with luminescent coating.