The Portuguese Perpetual Calendar IW502107 was introduced in 2003 and is a classic perpetual calendar model with a yellow gold case, Silver dial, And black alligator leather strap. The 44.2 mm case and 15.5 mm thickness feature harmoniously arranged Arabic numeral indexes, Leaf hands, Power reserve indicator at 3 o’clock, Month and year at 6 o’clock, Day of the week at 9 o’clock, And moon phase display at 12 o’clock.
Equipped with the IWC in-house automatic caliber 51614, It offers a power reserve of 7 days (168 hours) and automatically displays all calendar information, Including date, Day, Month, 4-digit year, And moon phase. Featuring IWC’s proprietary perpetual calendar system developed by Kurt Klaus, All calendar functions can be easily adjusted with just one crown.
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