Jaeger-LeCoultre's Atmos Classique Phases de Lune.
The Jaeger-LeCoultre Atmos is a marvel of technology and timekeeping that will continue to work as long as the sun rises.
With no battery, electric current or winding mechanism to speak of, the Atmos clock literally lives on fresh air, and has been doing so since 1928 when it was invented by Jean-Léon Reutter, and then perfected and manufactured by Jaeger-LeCoultre.
