Strap for Seamaster Aqua Terra 150m Master Co-Axial 41.5 Stainless Steel / Silver Waves / Bracelet

The lug width is 20mm. This dimension represents the width of the connection between the case and the strap. To verify compatibility, measure the distance between the two lugs on the case, or consult the official Omega documentation provided with your watch.

Given the 41.5mm proportions and maritime character, alligator in ice blue or black tones is the most aesthetically coherent choice. Vegetable-tanned calf leather represents an elegant and versatile alternative, with a patina that develops naturally over time. For those seeking durability and fascinating aging, red-brown shell cordovan offers superior longevity.

The procedure requires a specific tool (spring bar tool) to remove the metal bars that secure the strap to the lugs. Position your watch to easily access one of the ends, insert the spring bar tool into the small lateral space of the lug, gently compress the internal spring, and slide the bar outward. Repeat on the other side, then insert the new strap and secure the bars in place.

Yes, provided it respects the 20mm lug width and a maximum thickness of approximately 5mm in the transition area toward the lug. Quality straps from specialized manufacturers offer guaranteed compatibility. We recommend verifying technical specifications before purchase and opting for noble materials (alligator, calf, shell cordovan) that reflect the authority of the watch.

Durability varies based on material and usage. Premium vegetable-tanned calf leather typically lasts 3-5 years with daily wear; shell cordovan can exceed 7-8 years thanks to the natural compactness of the fiber. High-gloss alligator resists 2-4 years. Factors such as humidity, sun exposure, and frequency of use significantly influence longevity. An FKM rubber strap lasts 5-7 years. Atelier Casati Milano offers an 18-month warranty on all custom straps.