Strap for El Primero Chronomaster 38 Stainless Steel / White / C.01

The lug width is 19mm. This dimension is specific to the Collective model and represents a deliberate design choice that balances elegance with structural stability on the 38mm case. Measurement is taken from the inside of the upper spring bar to the inside of the lower spring bar.

Selection depends on usage: for formal elegance, black or dark brown alligator with natural patina development; for refined daily wear, vegetable-tanned leather in honey brown; for maximum durability, shell cordovan which develops blue-green patina over time. All compatible 19mm straps adapt through bespoke tailoring.

The 03.2152.4061/80.R825 features standard spring bars. Use a spring bar tool (small flat-headed screwdriver) to gently compress the internal spring from inside the case, then extract the bar. Position the new 19mm strap and reinsert carefully, verifying engagement on both sides.

Yes, any strap with 19mm lug width is compatible. Milano Straps offers bespoke personalizable leather straps; we recommend ensuring the deployment clasp or buckle does not exceed case width to avoid visual misalignment.

Lifespan varies with usage and material. Alligator leather: 5-8 years with intermittent wear. Vegetable-tanned: 3-6 years. Shell cordovan: 7-10 years if worn daily. The Casati Milano guarantee covers 18 months; aging is considered natural patina, not defect.