This is not a watch, it is a meeting place between a contemporary watch and a 19th century marine chronometer with its own guiding principle. As
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Le Régulateur Louis Erard x Massena LAB - Hands-On, Specs & Price
Louis Erard Introduces the Le Régulateur Massena Lab
Le Régulateur Louis Erard x Massena LAB - Hands-On, Specs & Price