Oris 673

Caliber 673 is an automatic chronograph movement manufactured by Oris. Based on the Valjoux 7750, it operates at 28,800 vph with approximately 42 hours of power reserve. Introduced in 2000, it represents Oris's use of the ETA/Valjoux 7750 platform before transitioning to Sellita movements. The movement is not in-house and production has been discontinued.