Strap for Speedmaster Reduced Ladies Stainless Steel / Diamond / MOP

The lug width of the Omega Speedmaster Reduced 3815.79.40 is 18 millimetres. This measurement is specific to this model and must be measured with precision between the two pins that hold the strap. A measurement error can result in incompatibility when replacing the strap.

The most suitable materials are alligator for formal elegance with its geometric grain, vegetable-tanned calf for natural patina and authenticity, and shell cordovan for longevity and intrinsic lustre. For more sporty applications, durable canvas NATO or structured rubber maintain the instrumental character of the chronograph.

Strap replacement requires a specific tool (spring bar tool or pin remover). Position the watch with the dial facing upward, identify the pins at the level of the lugs, and gently extract them by operating the tool from both sides. Once the pins are free, the old strap separates from the case. Insert the new strap by aligning the holes and reinsert the pins, ensuring they are securely fastened.

Any strap with an 18mm lug width is 100% compatible. Collections dedicated to this size include options in leather, rubber and fabric. The choice depends on the desired aesthetic profile: formal with alligator, sporty with NATO, sophisticated with cordovan.

The average lifespan of a leather strap is 3-5 years with daily wear. Factors such as humidity, perspiration and frequency of wear affect deterioration. High-quality leather, vegetable-tanned such as shell cordovan, can exceed 5 years. Regular maintenance and alternating with other straps significantly extends the useful life.