The moon has been an object of wonder for centuries. It was one of mankind's first guides to the measurement of time, and until relatively recently was the only source of night-time illumination. It controls the tides of the oceans and, it is thought, our moods. Many farmers are aware of the influence of the phases of the moon upon the cycle of harvesting. It is no surprise then that many time-keeping industries have incorporated the moon's revolving phases into their productions.

Blancpain is well-recognized for its production of moon phase watches. In 1983 the Calibre 6395 was introduced and marked the revival of the art of mechanical watchmaking. The watch has a classic functions display that is highly prized by collectors. Within the hour markers are the thirty-one days of the longest months. Below the 12 o' clock is the month and day have their windows. Above the 6 o' clock is the famous slant-eyed "man in the moon" among golden stars; in a crescent above him are the timed passing phases of his cycle. This model is well-known for having the smallest complete calendar moonphase plate of any watch in history. After some time, the watch was followed by the Calibre 6763, which featured the original moonphase and date displays. However, this watch incorporated Blancpain's own Calibre 1150 automatic movement and embraced a power reserve of 100 hours.

To celebrate the twentieth anniversary of the Calibre 6395, Replica Blancpain produced two limited editions in 2003, one in 18kt karat pink gold and the other in platinum. The rotor in the automatic movement was a hand-carved "man on the moon".

In 1993 Blancpain surprised the horological world with its production of a series of erotic watches (AKA bonking watches). These watches are defined by characteristics such as 18kt karat yellow gold, mechanical movements, and only a single watch of each design - based on paintings by the French artist Francois Boucher. These watches retail as high as 89,950 pounds each.