Strap for Constellation Co-Axial 35 Stainless Steel / Lozenge Silver

The lug width of the Omega Constellation 123.10.35.20.02.002 is 22 millimetres. This measurement is determined by the case geometry and represents the available space between the lug pins for strap insertion. It is important to verify this measurement with a digital caliper before purchasing an aftermarket strap, as an incompatible lug width will not fit correctly between the metal pins.

Strap replacement is accomplished by removing the spring bars (metal springs) that connect the strap to the case lugs. Using a dedicated tool (spring bar tool), compress the spring and extract the pin from the lug hole, freeing the old strap. The new strap is installed by following the reverse procedure, ensuring the spring bars are correctly positioned and the strap is perfectly aligned with the case.

The lifespan of a leather strap depends on the type of leather, daily use and maintenance. A quality calf leather strap, with ordinary care, has an average life of 2–4 years. Shell cordovan, thanks to the superior density of its fibres, can last 5–7 years or longer. Vegetable tanning develops greater resistance over time. Continuous use and exposure to moisture or perspiration reduce lifespan; regular maintenance (drying, treatment with specific creams) extends it considerably.