Strap for Speedmaster Reduced Stainless Steel / Black / Bracelet / Michael Schumacher

The lug width of the 3518.50.00 is exactly 18mm. This measurement is specific to this model and represents the correct lug width to fit perfectly on the reduced 39mm case. A 20mm strap would be too wide and would compromise the aesthetics, while a 16mm strap would leave visible gaps. It is important to measure the lug pins precisely to confirm compatibility before purchase.

Vegetable-tanned alligator represents the most recommended choice for the 3518.50.00: the vertical grain and the golden patina that develops over time pair perfectly with the satin-brushed stainless steel case. Excellent-quality calf leather is a valid alternative for those who prefer a smooth and polished surface. For those desiring a more sporty appearance, textile NATO or FKM rubber are authentic and functional choices. The decision depends on the context of use and the desired aesthetic character.

The procedure requires two tools: a spring bar tool (curved screwdriver specific for watches) and a soft surface. Position the watch on the cloth, locate the upper lug, insert the tip of the tool into the small slot of the internal spring on the spring bar, press with gentle pressure downward and outward to release one end. Repeat on the other side. Remove the old strap and insert the new one, ensuring that the spring bar pins fit snugly into the lug holes. If you are not experienced, a professional watchmaker can complete the operation in a few minutes.

Yes, but with caution. The 3518.50.00 requires precise 18mm straps. In the aftermarket you will find straps in alligator, calf, NATO and rubber in this size, but quality varies enormously. Handcrafted straps made with preprepared leathers (French alligator, Annonay calf) and hand stitching guarantee superior durability and elegance. Beware of generic low-cost solutions: a mediocre strap visibly compromises the watch. Suppliers specializing in luxury watch straps offer compatibility and durability guarantees.

A quality leather strap (alligator with vegetable tanning, Annonay calf) lasts on average between 3 and 5 years of daily use, depending on maintenance and exposure to moisture and sweat. Alligator straps, being more resistant to tears, tend to last longer than calf. Periodic maintenance (cleaning with a damp cloth, conditioning with specific creams twice a year) significantly extends useful life. An FKM rubber strap resists indefinitely, but tends to harden after 5-7 years of sun exposure. Textile NATO straps, if of good quality, last for years without requiring particular maintenance.