Strap for Speedmaster Professional Moonphase / Bracelet

The lug width of the Ref. 3576.50.00 is 20mm. This dimension represents the distance between the two spring bars that attach the strap to the case. It is an established standard for professional Omega sports chronographs and ensures compatibility with all straps designed for this width.

There is no absolute choice: it depends on intended use and desired aesthetics. Tobacco brown alligator amplifies professional sobriety. Vegetable-tanned calf ages beautifully over time. NATO nylon directly echoes the space heritage. FKM rubber is ideal for intense sports use. Each material communicates a different interpretation of the Moonwatch.

The change is straightforward: use a spring bar tool to extract the pins from the case. Insert the pin through the new lug by leveraging with the tool until you hear the reattachment click. Ensure the lug is positioned correctly before releasing pressure. The process takes just a few minutes and requires no specialized equipment.

Yes, any 20mm strap is mechanically compatible. However, it is important to choose an artisanal quality strap that honours the aesthetics and history of the Moonwatch. Materials such as alligator, calf, and professional rubber maintain coherence with the spirit of the watch, while lower quality straps compromise the experience.

Durability depends on material and use. A quality artisanal alligator or vegetable-tanned calf resists 4-7 years of daily wear. Rubber typically lasts 5-8 years before losing elasticity. Leather aging is natural and develops patina: a calf strap develops colour nobly over time, while alligator maintains its finish longer. With proper maintenance (light conditioning), durability increases significantly.