Strap for Speedmaster Professional Apollo 11 45th Anniversary

The Speedmaster Moonwatch 311.62.42.30.06.001 is fitted with 20 millimetre lugs. This measurement, also called lug width, is the standard construction specification for this reference and is measured internally between the metal folds of the case where the strap is inserted. Verifying compatibility by observing the space between the lugs ensures precise mechanical and aesthetic pairing.

For this two-tone reference (titanium and Sedna Gold™), the best pairing is a vegetable-tanned alligator in dark tones — black, dark brown or burgundy — which enhances the contrast between the metals and develops a noble patina over time. Alternatively, burgundy shell cordovan emphasises the Sedna Gold™, while tobacco calf and anthracite grey rubber offer daily versatility without compromising on case legibility.

The Speedmaster Moonwatch uses a straight lug system with spring bars: to change the strap you need to extract the lug pins with a specific tool (spring bar tool). The operation requires care to avoid scratching the case. If you prefer to avoid risks, many artisanal straps can be fitted by Casati Milano during a consultation at the atelier, with verification of fit and mechanical security.

Yes. Any strap with 20 millimetre lugs is mechanically compatible with your Speedmaster. However, not all aftermarket options respect the aesthetic proportions and construction quality required by a chronograph of this calibre. Artisanal straps in vegetable-tanned leather or technical rubber from milanostraps.it are designed to enhance the two-tone case and develop a patina over time that dialogues with the watch's material.

A quality leather strap — alligator, shell cordovan or vegetable-tanned calf — typically lasts between 2 and 4 years in daily wear, with variability due to exposure to sweat, humidity and frequency of wear. Vegetable tanning tends to age better than chemical tanning, developing a deep patina that documents the bond with the owner. Casati Milano offers an 18-month warranty and allows upgrades and repairs at contained costs, transforming the strap into a long-lasting object rather than a consumable.