Strap for Seamaster Aqua Terra 150M Co-Axial 38.5 Yellow Gold / Grey / Bracelet

The lug width of reference 231.50.39.21.06.002 is 21mm. This dimension corresponds to the space between the case suspension pins and determines strap compatibility. Always verify the measurement with a digital caliper positioned perpendicularly between the two pins, without applying excessive pressure.

For a yellow gold timepiece such as the 231.50.39.21.06.002, alligator leather in dark brown or black tones represents the classic choice, creating a harmonious dialogue with the richness of the precious metal. A high-quality alternative is vegetable-tanned calf leather in cognac or caramel tones, which develops natural patina with age. Shell cordovan in burgundy or dark brown adds further sophistication for formal occasions.

Strap replacement requires a dedicated tool for the suspension links. Position the watch on a soft surface (microfiber cloth), locate the suspension links (small metal cylinders connecting the strap to the case), gently push them outward using a fine-tipped instrument to release the previous strap, then insert the new strap by aligning the links. If you do not possess the tool or prefer to avoid risk, a professional watchmaker can perform the operation in a few minutes.

Yes, any strap in 21mm lug width is compatible with the 231.50.39.21.06.002. Artisanal high-quality leather straps made from materials such as alligator, calf, shell cordovan, and vulcanized rubber offer guaranteed compatibility. It is advisable to choose manufacturers that respect precise manufacturing tolerances (effective width 21mm ± 0.5mm) and use suspension links conforming to Omega standards.

A high-quality leather strap, made from materials such as alligator, calf, or shell cordovan, has an estimated lifespan of 3-5 years with regular use and appropriate maintenance (periodic cleaning, drying after moisture exposure, protection from direct heat sources). Vegetable-tanned leather ages naturally, developing attractive patina, but requires protection from prolonged standing water. Vulcanized rubber straps offer greater longevity (5-7 years) and moisture resistance, ideal for frequent water use.