Atmos clocks are technical brilliant. Invented in 1928 by Jean-Léon Reutter, and then perfected and manufactured by Jaeger-LeCoultre, this horological marvel is the Jaeger Le Coultre Atmos Classique Phases de Lune. Housed in pink gilt cabinet, it invites one to contemplate the phases of the moon. The fascinating functioning of this mechanism, Jaeger-LeCoultre Calibre 562, crafted and assembled by hand counts the hours, day after day, year after year, without any need for a battery or rewinding – this is a clock that literally lives on air, drawing its energy from variations in temperature. Its indication is so accurate that it will register a difference of only one day in every 3,821 years. The Atmos Classique Phases de Lune in pink gold is priced at $9,800.