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

The lug width is 20 millimetres. This is the distance between the two lugs that protrude from the case and into which the strap is inserted. It is essential to verify this measurement before purchasing an aftermarket strap to ensure proper fit and security on the wrist.

For this two-tone model with mother-of-pearl dial, white, cream or dark grey alligator represents the most elegant choice. Medium brown satin calf offers daily versatility, while blue or grey NATO allows flexibility between formal and sports contexts. Rubber is recommended for warm climates or aquatic environments.

You will need a spring bar removal tool or a Y-shaped tool. Place the watch on a soft surface, locate the lateral lugs and apply light pressure to extract them from the smaller hole on the case. Remove the old strap and insert the new one by aligning the lugs in their respective seats. The procedure takes only a few minutes and requires care to avoid scratching the case.

All straps with a lug width of 20 millimetres are compatible. Milanostraps.it offers a collection of straps in alligator, calf, shell cordovan, NATO and rubber in this size, customizable for initials, colour and thickness. Always verify that the strap is not already equipped with integrated non-removable lugs.

Durability varies based on the material and use. Premium quality alligator lasts 5-7 years with regular wear. Standard calf lasts 3-5 years, while shell cordovan, thanks to vegetable tanning, can last 8-10 years developing a fascinating patina. Rubber has a lifespan similar to calf but is more subject to UV degradation. The Casati Milano warranty covers 18 months of normal use.