Strap for Speedmaster Split-Seconds Stainless Steel / Carbon / Bracelet

The lug width of the Omega Speedmaster 3540.50.00 is 20mm. This intermediate width is a precise design choice by Omega, proportional to the 43.30mm case diameter. To measure correctly, position a ruler between the inside of the two horizontal lugs (where the strap attaches) and record the distance.

Ideal materials vary according to use: tiger-grain alligator for formal contexts; vegetable-tanned calf for spectacular aging; vulcanized rubber for humid or aquatic environments; silk NATO for vintage racing aesthetics. All available in 20mm size on milanostraps.it.

Strap replacement requires removal of the articulation pins (spring bars) that connect the strap to the lugs. Use a specific tool (spring bar tool) to release the lateral pin, remove the old strap, and insert the new one. If inexperienced, entrust the operation to a professional watchmaker.

All straps in 20mm lug width are compatible with the 3540.50.00. On milanostraps.it you will find an artisanal selection: alligator, calf, shell cordovan, natural rubber, NATO. Each strap is customizable in length, initials, and stitching thread.

A quality leather strap (alligator or vegetable-tanned calf) lasts an average of 3-5 years with regular use, developing a natural patina. Longevity depends on frequency of use, climate, and maintenance. Casati Milano straps offer an 18-month warranty and can be regenerated at the atelier after natural wear.