IWC SCHAFFHAUSEN

IWC is a vanguard of the perpetual calendar mechanism. In 1985, it introduced the world to its own take whereby its perpetual calendar mechanism was integrated so the crown could advance and reset all interrelated functions ‒ day, date, month, year and even moon phase. The Portugieser Perpetual Calendar Tourbillon in 45mm platinum adheres to the house’s design language closely with the fourdigit year indicator between 7 and 8 o’clock. The splendid in-house 51950 automatic movement is so accurate that the moon phase will only deviate by a single day in 577.5 years. Not to mention that the power reserve stands at seven days and considering it has to spurs the flying tourbillon, it is not bad at all.