Strap for Chronomat B01 42 Stainless Steel / Red Gold / Silver / Rouleaux

The lug width of the Breitling Chronomat B01 42 IB0134101G1A1 is 22 mm. This measurement is taken between the two lugs on the case back using a millimetre calliper, at the narrowest point of the gap. Using this precise figure is essential when selecting aftermarket straps to ensure a correct fit.

For the two-tone steel and red gold version of the Chronomat B01 42, the most suitable straps are alligator in vegetable-tanned leather in tobacco or cognac tones — which complement the warmth of the red gold — or smooth black calf leather for a sharp formal contrast. For sports use, vulcanised rubber or a heavy-duty 22 mm nylon NATO strap are technically sound choices given the watch's 200-metre water resistance.

The strap on the Breitling Chronomat B01 42 is removed using a flat-tip or fork-style spring bar tool, inserted into the lug hole to compress the spring bar. It is advisable to work on a soft surface to protect the case finish. The Chronomat's lugs have a curved profile, so replacement straps should feature curved ends to ensure proper fit and comfort.

Yes. The Breitling Chronomat B01 42 IB0134101G1A1 features a standard 22 mm lug width, compatible with the full range of Milano Straps handcrafted straps. It is important to select straps with curved ends to follow the case profile correctly, and to choose a 22/20 mm taper to match the original proportions. The full selection is available at milanostraps.it.

The lifespan of a leather strap depends on material quality, frequency of use, and exposure to moisture and perspiration. A high-quality vegetable-tanned alligator strap, rotated with other straps, can maintain good structural integrity for three to five years. Milano Straps straps are covered by an 18-month warranty against manufacturing defects.