Large 44mm Portuguese perpetual calendar in solid 18ct rose gold. This complicated watch features lunar path indication, phases of the moon in both hemispheres, countdown display to the next full moon, and a perpetual calendar accurately adjusting the date over the 4-year cycle. Astonishingly, all of the functions are set using only the crown, making this the most user-friendly perpetual calendar available. Powered by IWC's impressive 7-day automatic movement visible through the sapphire crystal back. UK retailed and in superb condition, complete with all IWC certificates, instructions and presentation case. Guaranteed by WATCHCLUB for 2 years.