Strap for Seamaster Aqua Terra 150M Co-Axial 43 GMT Chronograph Stainless Steel / Blue / Bracelet

The lug width of the Omega Aqua Terra 231.10.43.52.03.001 is 20mm. This measurement is specific to this model and represents the exact distance between the two pins at the ends of the case. It is essential to verify this dimension before purchasing an aftermarket strap to avoid excessive play or improper fitting.

There is no single choice. For a formal setting, vegetable-tanned alligator leather (tobacco, black, brown colors) pairs perfectly with the teak dial and amplifies its elegance. For daily wear and water sports, a technical fabric NATO or rubber strap ensures practicality and durability. Soft calf leather represents the ideal compromise between comfort and aesthetic versatility.

The strap is changed by removing the pins (spring bars) at the ends of the case using a dedicated tool (spring bar tool). Insert the spring lever at the base of the pin, lift to compress the internal spring, remove the old strap and insert the new one by aligning the holes. It is advisable to have a professional watchmaker perform this operation to avoid scratching the case.

Yes, provided they have a certified lug width of 20mm. Milano Straps offers straps specifically designed and tested for this measurement, customizable and guaranteed for 18 months. Avoid generic 19 or 21mm straps, which would cause lateral play or excessive tension on the pins.

The duration varies based on material and use. An alligator strap in vegetable tanning, with proper maintenance (periodic cleaning, protection from impacts), lasts 3-5 years under normal wear conditions. Soft calf leather, more subject to constant flexing, tends to show failure after 2-3 years. Rubber or NATO straps last longer if protected from excessive sun exposure. The 18-month warranty offered by Casati Milano covers manufacturing defects and premature failures.