Strap for Seamaster Aqua Terra 150M Co-Axial 30 Stainless Steel / Red Gold / Grey / Bracelet

The 231.20.30.20.06.003 requires watch straps with a lug width of 20 millimeters. This size is specific to the 30mm women's version of the Aqua Terra collection. To verify compatibility, measure the internal distance between the fixed lugs of the case with a digital caliper or consult the original Omega documentation.

For the two-tone steel/red gold case of this model, we recommend cognac alligator, vegetable-tanned blue navy or burgundy calf, and rum-colored shell cordovan. Avoid straps with large grain leather that diminishes the proportions of a 30mm case. The choice depends on intended use: alligator for elegance, calf for versatility, rubber for frequent water activities.

Remove the existing strap by inserting a dedicated tool (spring bar tool) into the lateral holes of the attachment spring, then push outward to release the pins. Insert the new strap with 20mm lug width, ensuring the pins click securely. If you are not experienced, consult a professional watchmaker to avoid damaging the case. Milano Straps offers compatibility advice.

Yes, provided the strap is produced with a 20mm lug width compatible with your case's attachment system. Verify that the internal keeper does not have excessive friction and that the external width does not compromise the movement. Milano Straps artisanal straps are specifically produced for this size with extremely precise tolerances, guaranteeing absolute compatibility.

Durability depends on the material and usage. A high-quality alligator or shell cordovan strap lasts 4-6 years with moderate use and regular maintenance (gentle cleaning, protection from sweat and humidity). Calf and rubber have variable lifespans: calf 2-3 years, rubber 5-7 years. Milano Straps artisanal straps include an 18-month warranty and can be restored through the Casati Milano atelier.