Omega
Speedmaster Moonwatch 311.33.42.50.01.001 (aka: 31133425001001)— lug 20mm

The lug width is 20mm, available in both steel and gold versions. This dimension is determined by the distance between the spring bars that connect the strap to the case and is essential to ensure complete compatibility. Always verify by manually measuring the space between the two lugs before purchasing an aftermarket strap.

For the steel Moonwatch, a dark brown or black alligator strap represents the classic luxury choice. If you seek superior durability, shell cordovan offers exceptional resistance and a fascinating patina over time. For authentic sporting use, a ballistic NATO or rubber strap maintains the original tool identity. On milanostraps.it you can choose from customizable premium materials.

Strap replacement is an operation that requires a spring bar tool (a specific tool with small levers). Insert the tips into the lateral recesses of the spring bar, gently lift to release the strap end, repeat on the other side. Insert the new strap by snapping the spring bar into the holes. If you prefer to avoid the risk, the Casati Milano atelier offers a strap change service with professional guarantee.

Yes, any strap with a 20mm lug width is technically compatible. However, to ensure aesthetic quality and durability, we recommend artisanal straps that respect the standards of the original model: premium leathers, robust stitching, finishes consistent with the tool's style. On milanostraps.it you will find a selection of 20mm straps specifically designed for the Moonwatch.

The lifespan of a leather strap depends on the material and use. Vegetable-tanned calf leather lasts 3-5 years with intense daily use. Alligator can reach 7-8 years thanks to its more compact grain. Shell cordovan, due to its structure, can exceed 10 years while maintaining structural integrity. Factors such as humidity, frequency of use, and maintenance directly influence longevity. Casati Milano offers an 18-month warranty on its straps.