Strap for Seamaster Aqua Terra 150M Master Co-Axial 38.5 Stainless Steel / Black / Bracelet

The lug width of the Omega Aqua Terra 231.10.39.21.01.002 is 20mm. This width is the standard for this 38.5mm model and is the fundamental parameter for selecting compatible straps. Always measure the lateral spaces on the case—from one inner lug to the other—to confirm this measurement before purchasing.

Alligator is the most elegant choice for this model, thanks to its fine grain and its visual dialogue with the teak dial. Alternatively, shell cordovan offers remarkable chromatic depth and patina development over time. For a more versatile approach, vegetable-tanned calf allows transitions between formal and sporty contexts without aesthetic compromise.

The Omega Aqua Terra 231.10.39.21.01.002 uses standard spring bars for strap attachment. Remove the Crown, position the spring bar on a stable support, insert a spring bar removal tool into the space provided on the spring bar itself, and once extracted, the old strap disengages. Insert the new strap by aligning the holes, and reinsert the spring bars until they click. If you prefer, the Casati Milano atelier performs the replacement by hand with extreme care.

Yes. Any strap with a 20mm lug width is compatible with the Omega Aqua Terra 231.10.39.21.01.002. Online you will find 20mm straps ready for shipment, customizable in material, color, size, and thread color. For a bespoke experience, Casati Milano creates made-to-measure straps by personally selecting the finest leathers and guaranteeing 18 months of support.

A high-quality leather strap (alligator, shell cordovan, vegetable-tanned calf) typically lasts 5-10 years with daily wear, varying based on climate (humidity accelerates wear), cleaning frequency, and buckle type. Vegetable-tanned leather develops patina and improves over time. With regular maintenance (light cleaning, quick drying after water exposure), the lifespan extends considerably. Rubber or fabric straps last longer but require more frequent replacements.