Strap for Chronomat 41

The lug width of the Breitling Chronomat B01 41 (ref. AB0140AAG711728P) is 20mm. This measurement is taken with a calliper between the two lugs at the point where they meet the case, and is compatible with any standard 20mm strap.

The most suitable materials for the Chronomat B01 41 are: alligator belly leather for a formal and refined look, vegetable-tanned calfskin for daily wear with natural patina development over time, nylon NATO for sporting contexts, and vulcanised rubber for aquatic or intense physical activities. The ideal choice depends on the dial colour and intended use.

The strap on the Chronomat B01 41 is secured via spring bars seated within the case lugs. Using a fine-tipped spring bar tool, compress each spring bar end to release it from the lug slot. The operation can be carried out independently with the correct tool, or entrusted to a watchmaker to avoid scratching the case.

Yes, the 20mm lug width of the Chronomat B01 41 is a universal standard. Milanostraps.it offers high-quality aftermarket straps — in leather, NATO and rubber — handcrafted and fully compatible with this reference. If the original Breitling deployant clasp is being retained, it can be refitted directly onto a new leather strap.

The lifespan of a leather strap depends on the material, frequency of wear and level of care. A quality vegetable-tanned calfskin strap typically lasts between 18 and 36 months with daily use. Alligator leather, being more compact and resistant, can exceed 3 years. Avoiding prolonged exposure to water, perspiration and direct sunlight will significantly extend the strap's life.