Strap for Chronomat Automatic 36 Stainless Steel / Carribean

The Breitling Chronomat 36 A103803A1L1A1 features a lug width of 16mm. This measurement is dictated by the 36mm case diameter and the integrated rouleaux bracelet attachment system. When sourcing an aftermarket strap, this dimension must be matched precisely to ensure a correct fit between the lugs.

For the steel Chronomat 36, the most suitable options include hornback alligator (slate grey or gloss black), vegetable-tanned calfskin for a developing patina, or vulcanised rubber for sporting use. A stainless steel butterfly deployant clasp is recommended to maintain the strap's shape over time and ensure visual harmony with the case.

Strap replacement requires a flat-tipped springbar tool. The Chronomat 36 has short lugs, so precision is essential to avoid scratching the case. Work on a watchmaker's cushion under adequate lighting. If in doubt, consult a professional watchmaker or the Casati Milano atelier for a bespoke fitting service.

Yes. Milanostraps.it offers a curated selection of 16mm straps compatible with the Chronomat 36, handcrafted in alligator leather, vegetable-tanned calfskin, shell cordovan and rubber. Each strap is cut with a straight or gently tapered end to suit the lug geometry of this specific model.

Longevity depends on the material and frequency of use. A vegetable-tanned calfskin strap typically lasts 2–4 years with regular wear. Alligator leather, being denser and more resistant to surface moisture, can exceed 4–5 years if kept away from direct water exposure. Shell cordovan is the most durable smooth leather option. All Casati Milano straps carry an 18-month guarantee against manufacturing defects.