Strap for Seamaster Aqua Terra 150m Co-Axial 41.5 Day-Date Stainless Steel / Black

The lug width of the Omega Aqua Terra 231.13.42.22.01.001 is 22 millimetres. This measurement refers to the internal space between the two lugs of the case, measured from inner wall to inner wall. Verifying this dimension when purchasing a compatible strap is essential to ensure proper fit and compatibility.

For the 231.13.42.22.01.001, alligator leather straps are recommended for formal contexts, vegetable-tanned calf leather for versatile daily wear, and shell cordovan for collectors seeking a durable patina over time. Vulcanised rubber or NATO fabric straps are ideal for sporting or diving applications. The choice depends on balancing elegance with practical usage patterns.

Strap replacement is performed using the spring bars fitted to the case lugs. Using a dedicated tool or calibrated needle, gently push the existing spring bar downward, remove the old strap and insert the new one, aligning it with the lug seats. The spring bars must engage with an audible click when properly seated. We recommend professional strap installation through an experienced watchmaker or the Casati Milano atelier to avoid damage to the case.

Yes, the aftermarket strap market for 22mm lug width is extensive. Specialist manufacturers such as Milano Straps offer straps in fine leathers (alligator, calf, shell cordovan), technical fabrics and rubber, all compatible with the 231.13.42.22.01.001. It is crucial to verify lug width at purchase and select certified materials of proven quality to preserve the timepiece's value and long-term usability.

Lifespan depends on material and usage intensity. An alligator or shell cordovan strap, if properly maintained and protected from frequent abrasion, can last 10–15 years or more. A calf leather strap with vegetable tanning has an average life of 5–8 years under daily use. Prolonged exposure to sunlight, moisture and perspiration shortens durability. Regular maintenance (gentle cleaning and conditioning with natural waxes) significantly extends strap life.