Strap for Constellation Co-Axial 35 Stainless Steel / Silver

The lug width of the Constellation 123.10.35.20.02.001 is 20 millimetres. This measurement represents the distance between the two lugs that connect the strap to the case. To verify it, position a digital calliper perpendicular to the case, measuring from one lug to the other on the inner side. This specification is crucial to ensure a perfect fit without lateral play.

It depends on your intended use. For formal elegance, an alligator or vegetable-tanned shell cordovan strap enhances the sophistication of the brushed and polished steel case. A smooth calf leather offers everyday versatility while maintaining dignity. For more robust use, a canvas NATO or FKM rubber strap guarantees durability without compromising readability. Online you will find a wide selection of 20mm straps compatible with your model.

The strap is replaced by removing the spring bars that connect the strap to the case lugs. Use a specific tool – a spring bar removal tool or a thin flat blade – to gently extract the spring bars from both sides. Position the new strap and reinsert the spring bars until you feel a locking click. If you are unsure, contact an authorised service centre to ensure the replacement is done without risk to the case.

Yes, completely. Any strap with a 20 millimetre lug width is compatible with your Constellation 123.10.35.20.02.001. Online you will find hundreds of options: from vegetable-tanned leather to NATO, from FKM rubber to shell cordovan. Compatibility is guaranteed, while the choice comes down to personal preference in terms of material, colour and overall aesthetics.

The lifespan of a leather strap depends on the material, tanning method and use. An alligator or vegetable-tanned calf leather, with proper care (avoiding prolonged moisture, periodic cleaning with a dry cloth), typically lasts 3-5 years with moderate daily use. Shell cordovan, due to its compactness, can last 7-10 years. An FKM rubber strap has a longer lifespan (10+ years), while a canvas NATO strap, being robust, lasts 5-7 years. The construction quality of the chosen strap significantly affects its longevity.