Strap for Speedmaster Professional Broad Arrow Moonphase Stainless Steel / Ivory / Bracelet

The lug width of the 3575.20.00 is 20mm. This measurement represents the distance between the case attachment pins and determines strap compatibility. You can verify it by measuring the internal space between the metal attachments or by consulting the original Omega documentation for your reference.

There is no single "best" strap in absolute terms, but optimal choices depend on your use case. Black alligator represents the most refined formal solution, enhancing the white gold caseback. Vegetable-tanned calf offers comfort and evolving patina ideal for daily wear. FKM rubber ensures durability for sports or aquatic environments. The choice depends on your personal style and the watch's primary use.

The strap is changed using a spring bar tool or dedicated lever. Position the watch on a soft cloth, locate the transverse pins at the case attachments, gently push toward the center to release them, then remove the worn strap. Insert the new strap by aligning the holes with the pins, press until fully inserted. If you lack experience, consult a watchmaker to avoid damage.

All straps with a 20mm lug width are compatible with the 3575.20.00. On milanostraps.it you will find a wide catalog of models in alligator, calf, shell cordovan, NATO, and rubber, customizable in color, size, and finish. We recommend always verifying the total strap length to ensure optimal comfort on your wrist.

The lifespan of a leather strap depends on usage intensity and material. A quality artisanal vegetable-tanned calf typically lasts 3-5 years with daily wear, developing a fascinating patina over time. Alligator, being denser, can exceed 5 years. FKM rubber generally lasts 4-7 years. Factors such as humidity, perspiration, and sun exposure accelerate wear. Casati Milano straps include an 18-month warranty and can be reconditioned at the atelier.