Strap for Constellation Co-Axial 38 Stainless Steel / Yellow Gold / Lozenge Black

The lug width of the 123.20.38.21.01.002 model is 20 millimetres. This measurement corresponds to the distance between the two spring bars that connect the strap to the case. It is important to verify this measurement before purchasing an aftermarket strap, as even a small discrepancy can compromise the fit.

For the two-tone gold/steel 123.20.38.21.01.002, an alligator strap in brown, hazel or burgundy tones represents the most elegant and compatible choice. Vegetable-tanned calf leather offers a fascinating alternative for those who appreciate natural patina. For more sporty uses, a cotton NATO or certified FKM rubber nevertheless maintain aesthetic dignity.

Strap replacement requires the use of a specific tool (spring bar tool) to compress the spring bars and extract them from the case. We recommend having your trusted watchmaker guide you the first time, to avoid damage to the spring bars or case. Once the spring bars are extracted, the previous strap disengages easily and the new one simply locks in by reversing the procedure.

Any strap certified for the 20mm lug width is compatible with the 123.20.38.21.01.002. Milano Straps offers an extensive collection of 20mm straps in various finishes (alligator, calf, rubber, fabric) customizable in colour, stitching and dimensions. Compatibility is guaranteed by the universal spring bar system.

A fine leather strap (alligator, calf, shell cordovan) lasts on average 3-5 years with daily wear, depending on climate, frequency of use and maintenance. Proper storage (protection from direct light and excessive humidity) can extend the life to 7-10 years. Milano Straps provides straps with 18-month warranty and support for maintenance over time.