In 2020, Breitling unveiled the revamped Chronomat B01 42. This updated version features a more streamlined case with sharper edges, a redesigned bezel, and the choice of a new 'Rouleaux' bracelet. Powering the watch is Breitling's reliable in-house B01 movement. Fast forward to 2024, and we see the addition of reference RB0134721B1S2 to the collection. This particular Chronomat boasts a diamond-set stainless steel case and a classic black dial.