Breitling Navitimer B01 Chronograph 43mm Rose Gold RB0138211B1P1Overview The Breitling RB0138211B1P1, better known as the Navitimer B01 Chronograph 43, represents the latest evolution of one of watchmaking's most recognizable designs. This iteration maintains the Navitimer's iconic DNA while bringing it firmly into the 21st century. At 43mm, the stainless steel case strikes a balance between wrist presence and wearability. The signature slide rule bezel a hallmark of the Navitimer since 1952 remains intact,