F.P. Journe 1506

Calibre 1506 is a manual-winding chronograph movement manufactured by F.P. Journe. It measures elapsed time in 1/100th of a second increments up to 10 minutes using a patented rocker arm at 2 o'clock rather than traditional pushers. The chronograph mechanism is mechanically isolated from the timekeeping train, so running the stopwatch does not affect accuracy. Power reserve is 80 hours. The movement remains in production and powers the Centigraphe Souverain in the LineSport collection.