Breitling B09

Manual WindingIn ProductionIn-house
Family: B0x70h power reserve

Caliber B09 is a manual-winding chronograph produced by Breitling. Introduced in 2020, it is Breitling's in-house derivative of the B01, retaining the column-wheel and vertical clutch architecture while delivering a 70-hour power reserve. The movement remains in production as part of the manufacturer's B0x caliber family.