The Girard Perregaux 42.0 watch movement, utilized during the period of 1960-1962, features a micro rotor and a detached manual winding mechanism. It incorporates the Girocap combined settings for the escapement wheel and a micrometer regulator. The indirectly driven minute and second hands enable a low profile design. This movement also includes an enhanced winding mechanism, resembling the 215-2 model. Notably, it offers various functionalities such as automatic winding, sweep seconds, and a calendar featuring date adjustment through a 21-24 hour mechanism.