Strap for Speedmaster Date 40 Stainless Steel / White / Bracelet / Olympic Los Angeles 1932

The lug width of the Speedmaster 3513.20.00 is 20 millimetres. This is the international standard for sports chronographs in this price and case size range. To verify compatibility, measure the distance between the two lugs soldered on the case: the value must be exactly 20mm.

The choice depends on use and personal preferences. A polished black alligator with grey stitching creates impeccable formality; vegetable-tanned calf develops natural patina over time and is ideal for those seeking aesthetic evolution. For marine or humid environments, shell cordovan or rubber offer superior resistance. Consult our Casati Milano atelier for a personalised selection.

The Speedmaster 3513.20.00 has lugs soldered directly to the case. Any strap change requires the removal of the original lugs by a specialist watchmaker, an operation that is non-invasive but permanent. Once freed, the lugs can accommodate any strap with 20mm lug width. Milano Straps recommends professional assistance during this operation.

Technically yes, since 20mm is a universal standard. However, the construction quality of Milano Straps artisanal straps—crafted with premium leather, quick-release deployant and exclusive finishes—transforms the user experience. An inexpensive generic strap diminishes the aesthetic and tactical potential of this chronograph.

An artisanal strap with vegetable tanning or alligator leather, worn daily, has a construction lifespan of 3-5 years before requiring maintenance. With proper care—maintaining dryness, occasional cleaning, avoiding prolonged moisture—the lifespan increases significantly. Milano Straps offers an 18-month warranty on all bespoke straps, with the possibility of future restoration.