Strap for Speedmaster 57 Co-Axial Stainless Steel / Red Gold / Black

The lug width is 20 mm (internal distance between the two lugs of the case). This is the standard historical width for postwar Omega chronographs and remains unchanged in this model. When purchasing a strap, ensure it is compatible with the 20 mm width by always verifying the technical specifications.

We recommend natural brown or cognac alligator for a formal pairing that enhances the red gold, or shell cordovan which develops a beautiful aged patina. For a more sporty profile, black calf or a grained rubber with leather keeper are excellent choices. The choice depends on your use: dressier vs. versatile.

The Speedmaster '57 uses fixed straight lugs. To change the strap, remove the two spring bars that pass through the lugs using a dedicated tool (strap remover tool). Extract the bar ends with tweezers and free the old strap. Insert the spring bars into the new strap, ensuring the hole is perfectly aligned, then reinsert the bar into the case.

Any strap with a 20 mm lug width is compatible. The best aftermarket options for this watch are fine leathers in alligator, shell cordovan, superior calf, and grained rubbers with pronounced texture. Always verify that the strap is full-length (not pre-cut) to allow for personalized adjustment to your wrist.

A fine leather strap (alligator, shell cordovan, calf) typically lasts 3-5 years with daily wear, up to 7-10 years with occasional use. Durability depends on factors such as ambient humidity, sun exposure, frequency of wear, and leather quality. An artisanal vegetable-tanned strap tends to last longer as it develops character and patina rather than degrading.