Invented in the 18th century, the perpetual calendar is based on the Gregorian calendar, decreed by Pope Gregory XIII in 1582. It automatically accounts for the 28, 30 and 31-day months, as well as the addition of the 29th of February during leap years.

Among the most difficult complications to achieve, the perpetual calendar is a marvel of micromechanics, representing both a technical challenge for a watchmaker and an inexpressible emotion for any lover of beautiful timepieces.

Meanwhile, among the Jaeger-LeCoultre watches with perpetual calendars, the Master Ultra Thin Perpetual is the most iconic model. With its remarkable proportions, this watch offers a clear reading of the perpetual calendar, featuring the month, date, day of the week and year, as well as its power reserve and day/night indicator.

With a thickness of only 9.2 mm, the model’s stainless steel case houses an ultra-thin movement of great sophistication, representing the multiple skills of the Grande Maison named Jaeger-LeCoultre Calibre 868/1. This self-winding movement is beating in 18800 vibrations per hour and has perpetual calendar and moon phases function.

Comes with a deep black, sunray-brushed dial, the watch features an original characteristic and strong design, which extends to the alligator-skin strap of the same colour. The golden-brown moon appears with equal intensity at 12 o’clock.

Three counters of identical dimensions display the perpetual calendar functions: the day of the week at 9 o’clock, the calendar at 3 o’clock, and the month at 6 o’clock. Above the dial, a discreet moon phase indicator pursues its progression, displaying the ever-changing lunar profile in its wake.

From the very first glance, the black of the dial and strap entices and intrigues. The Master Ultra Thin Perpetual steel model offers watch lovers a perpetual calendar in an ultra-thin exterior shrouded in deep colours. Find out more about this collection at your nearest The Time Place Boutique.

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