Strap for Speedmaster Date 38 Stainless Steel / Diamond / Purple

The exact lug width is 18mm. This width is fundamental for selecting a compatible strap and ensuring the correct fit between the case and wrist. Always measure excluding the deployant clasp, using a digital caliper perpendicular to the case recess.

It depends on intended use and desired aesthetics. Hornback alligator offers sophisticated sportiness with sharp grain; shell cordovan develops deep patina over time; vegetable-tanned calf reflects original heritage; FKM rubber remains the purist choice for reliability. The stainless steel case pairs well with all these materials.

18mm straps are changed using a dedicated spring bar remover tool. Position the spring bar remover in the small groove of the spring bar itself and gently press downward, creating sufficient space to extract the old strap and insert the new one. If in doubt, a professional watchmaker can complete the operation in minutes.

Yes, completely. Any strap with an 18mm lug width is compatible, regardless of manufacturer. Compatibility depends solely on the lug width measurement, not on the watch brand. Artisanal straps from Casati Milano guarantee custom construction and quality superior to catalogue options.

Durability varies based on material and usage. Museum-quality shell cordovan lasts 3-5 years with visible aging; American alligator 2-3 years; vegetable-tanned calf 18-24 months. Sun exposure, perspiration, and humidity fluctuations accelerate wear. Casati Milano provides an 18-month warranty on all artisanal straps, with regeneration possible thereafter.