Strap for Speedmaster 57 Master Chronometer 40.5 Stainless Steel / Blue / Bracelet

The lug width of the Speedmaster '57 332.10.41.51.03.001 is 20mm. This measurement is taken between the inner shoulders of the case lugs and determines compatibility with watch straps. It is essential to verify this measurement before purchasing a new strap to ensure proper fit without unwanted play.

For the Speedmaster '57 332.10.41.51.03.001, shell cordovan is the most suitable material, as it develops a noble patina over time and enhances the watch's retro character. Alternatively, vegetable-tanned calf leather offers a more formal aesthetic, while silicone rubber ensures daily practicality without compromising construction quality. The choice depends on intended use and personal aesthetic preferences.

The strap is replaced by removing the spring bars present in the case lugs. Using a specialized tool or gentle lever action, press the spring bar to free it from its seat, allowing vertical removal. Once the worn strap is extracted, insert the new strap into the same seats, reinsert the spring bars, and verify they are correctly positioned. If you are not experienced, we recommend consulting a specialized watch strap maker.

Yes, provided the strap is specified as 20mm lug width. Always verify the specification in the product description. Milanostraps.it offers a wide range of 20mm straps customizable in length, leather type, and stitching color, guaranteeing compatibility certified with the Speedmaster '57 and other Omega models with 20mm lugs.

The lifespan of a leather strap depends on material quality, tanning method, and use. A shell cordovan or vegetable-tanned calf strap, if properly cared for, can last 3-5 years with daily wear. Silicone rubber is more durable, lasting up to 5-7 years. Avoiding prolonged immersion, direct sunlight exposure, and excessive humidity significantly extends strap life. Casati Milano guarantees its straps for 18 months.