In an odd twist of luxury snobbery goes silly, Jaeger-LeCoultre actually named this clock the Atmos Birthday – to celebrate the 80th birthday of the (almost) perpetual, atmospheric movement of the Atmos clock line. The simple design and background spells out a series of “Atmos Birthday” words. Looking at the clock head-on you see the dial in mostly rhodium plated steel with parts of the back in mother-of-pearl (in blue or pink). The movement is hidden in the back.

In addition to the time, the Atmos Birthday has a month and moon phase indicator. The large balance wheel sits below as the entire complex contraption sits in a pedestal with a plate for custom engraving, inside of a crystal class case.

Although the Atmos movement is now over 80 years old (introduced in 1928), the movement still feels as modern as ever with its almost impossible petite power consumption, feeding off of slight changes in a rooms temperature. All hand made, and limited to just 8 pieces.