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

The lug width of the Omega Aqua Terra 231.10.42.22.02.001 is 20 millimetres. This measurement corresponds to the distance between the lateral lugs of the case and determines compatibility with the strap. To verify it precisely, use a digital calliper measuring the space between the inner edges of the two lugs: the result must be exactly 20 mm.

The choice depends on the intended use and personal aesthetic preferences. For formal occasions and business contexts, we recommend an alligator with vegetable tanning in dark cognac tones, which develops a natural patina over time. For versatile daily wear, a full-grain calf with satin finish offers quality without compromise. For aquatic environments or hot climates, vulcanised rubber or a NATO jacquard ensure practicality and grip. Shell cordovan represents the premium solution for those seeking both resilience and refined aesthetics.

Strap replacement requires the use of a specific tool (spring bar removal tool) to compress the elastic pins at the ends of the lugs. Position the watch with the case facing upwards, gently insert the tool into the lateral spaces to compress the pin, then extract it from its seat in the case. Repeat the operation on the other side. Next, insert the new strap into the first lug, compress the pin and insert it into the opposite seat, ensuring it clicks correctly in both holes.

Yes, Milano Straps offers a complete collection of handcrafted 20 mm aftermarket straps compatible with this model. You can browse the online selection of 20 mm straps ready for shipment, or contact the Casati Milano atelier for a completely customised solution crafted with leathers of your choice and an 18-month warranty.

The lifespan of a leather strap depends on the material, frequency of use, ambient humidity and maintenance. An alligator or shell cordovan with vegetable tanning, used regularly, maintains structural and aesthetic integrity for 3-5 years. A satin calf subjected to daily use in humid environments requires monitoring after 2-3 years. Rotating with alternative straps (rubber, NATO) significantly extends the life of each individual strap. Casati Milano guarantees 18 months on its bespoke production and offers regeneration and pin replacement services.