Strap for Seamaster Aqua Terra 150M Co-Axial 34 Yellow Gold / Diamond / MOP

The lug width is 19mm. It corresponds to the distance between the two pins that connect the strap to the case. Verify by measuring the distance between the internal holes of the fixed lugs with a caliper. Never confuse lug width (19mm) with case diameter (34mm).

Beige or cognac alligator is the most sophisticated and conservative choice, as the fine grain does not contrast with gold. For those seeking warmth, vegetable-tanned calf in chestnut or brown develops a patina that ages in harmony with gold. Bordeaux or mahogany shell cordovan adds luminous depth without harshness. Avoid textile materials such as NATO, which would diminish the watch's elegance.

Use a spring bar tool to remove the pins from the lugs. Insert the tool into the small lateral hole of the lug, apply gentle lateral pressure and the pin will retract, releasing the strap. Repeat on the other lug. To mount the new strap, align the holes and push the pin until it clicks into position, listening for the safety click.

Yes, provided the lug width is exactly 19mm. Artisanal aftermarket straps offer superior quality and customization compared to Omega OEM straps. Verify compatibility by measuring the lug width on the case and choose a strap specifically sized for this dimension.

A quality leather strap (alligator, calf, shell cordovan) typically lasts 3-5 years with daily wear, considering exposure to sweat, moisture and UV rays. With proper maintenance — regular brushing and protective wax treatment — the lifespan extends. Casati Milano straps include an 18-month warranty and can be regenerated or replaced through a dedicated atelier.