During its 175 years of existence, Longines has turned out more than 34 million timepieces, all accurately recorded. Their character evidently reflects the period of their production. Horological design and production methods correspond to definite periods, generated by the technology - sometimes developed by Longines itself - as well as by the different tastes of the world markets of the time. Each period will have its own ideas about the standards a watch should meet and how it should be built. It follows that watches reflect evolving notions regarding the conditions and constraints under which they are made.

The Museum of the 34 Million watches seeks to display the basic parameters of watch manufacturing in 34 showcases, each symbolising one million timepieces. It provides an overview of what watch manufacturing involves, period after period, suggesting trains of thought on the amount of time needed for the allegorical production of one million timepieces. Each showcase features period visuals and written material, on the production process of the time. This material seeks to throw new light on the underlying implications of Longines’ own manufacturing activities.