it features a handsome ice-blue dial that offsets the collection’s famous slide rule function with an elegant perpetual ...

Just when you think you’ve seen them all, someone comes up with something new and unusual, like the concentric rings of this automated perpetual calendar ... Most of the clock is made from ...

The ultra-thin new Piaget Polo Perpetual Calendar watch now features completely unique stone dials in blue and green hues ...

The GOAT rocked the Royal Oak Perpetual Calendar ref. 26674SG.OO ... The display features the months and leap year at 3 o’clock, the moon phase at 6 o’clock, the day and 24-hour indicator ...