The name of the collection, Geophysic, references the model created in 1958 as homage to the International Geophysical Year. Back then, during the height of the Cold War, substantial resources were invested into scientific discoveries and geological surveys.
Present day Geophysic watches have one complementary function in common: the seconde morte or True Second as the Jaeger-LeCoultre Grande Maison calls it. The small seconds hand of these mechanical chronometers marks the seconds by “jumping” – a type of movement that used to be common in regulators and is still seen in quartz watches but is quite rare in mechanical timepieces. The Geophysic features yet another technical innovation: a unique and extremely precise Gyrolab balance wheel with a non-circular configuration which is smaller and resembles the letter H.