Strap for Chronomat Automatic 36 Stainless Steel / Red Gold - Diamond / Copper / Rouleaux

The lug width of the Breitling Chronomat 36 U10380591K1U1 is 20 mm. This measurement is taken between the two lugs at their narrowest point, where the strap sits against the case. A digital calliper is recommended for an accurate reading before purchasing a replacement strap.

For the two-tone Chronomat 36 U10380591K1U1 in red gold and stainless steel, the most suitable materials are glossy alligator leather in bordeaux or cognac tones to complement the warmth of the red gold, or vegetable-tanned calfskin for a more contemporary feel. Shell cordovan is the premium choice for those seeking long-term surface compactness and durability. A deployant clasp in steel or red gold provides a coherent finishing touch.

To replace the strap on the Chronomat 36, the original Rouleaux bracelet must be removed by releasing the screws or spring bars at the lug attachment points, depending on the configuration. A fine-tipped spring bar tool should be used to avoid scratching the case. As the lugs have a specific curvature, straps with shaped or curved ends are recommended to ensure a flush fit. If in doubt, entrust the operation to a qualified watchmaker or the Casati Milano atelier.

Yes, aftermarket straps compatible with the Chronomat 36 U10380591K1U1 are available in 20 mm lug width. It is important to select models with curved or domed ends to match the Breitling lug geometry and prevent lateral stress on the strap. Milanostraps.it offers a curated selection of handcrafted 20mm straps, with a bespoke customisation option through the Casati Milano atelier.

The lifespan of a leather strap depends on the material, care and daily use. A quality alligator or shell cordovan strap, hand-stitched with vegetable-tanned leather, can last between 3 and 6 years with regular wear. Prolonged contact with water, perspiration and perfumes should be avoided, and the strap should be stored with adequate ventilation. The Casati Milano guarantee covers manufacturing defects for 18 months.