Omega · Aqua Terra
Strap for Seamaster Aqua Terra 150M Co-Axial 30 Stainless Steel / Yellow Gold / MOP / Bracelet
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Recommended spring bar
Straps for the Aqua Terra 231.20.30.20.55.002 (aka: 23120302055002)
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€149
Red Alligator Strap Water Resistant€195
Green Rubberized Alligator Strap with Ecru Tribal Stitching€149
Hammered Calfskin Strap Light Blue€98
Vintage Olive Green Calf Leather Watch Strap€80
The Aqua Terra 231.20.30.20.55.002 (aka: 23120302055002), seen from the bench
Frequently asked questions
What is the lug width of the Omega Aqua Terra 231.20.30.20.55.002?
The <a href="/pages/termine-glossario/misura-ansa">lug width</a> of this model is 20mm. This dimension is standard for Omega Aqua Terra 30mm watches and is compatible with the complete range of artisan straps offered by Milano Straps for this specific measurement.
What is the best strap for a 30mm Omega Aqua Terra with mother-of-pearl and yellow gold?
To enhance the material duality of this model, a pearl grey <a href="/pages/termine-glossario/alligatore">alligator</a> or calf with fine grain embossing represent the most suitable choices. Alligator maintains a regular texture that dialogues with the mother-of-pearl dial without competing; calf with <a href="/pages/termine-glossario/concia-vegetale">vegetable tanning</a> develops a patina over time that accompanies the natural aging of the gold details.
How do you correctly measure lug width to change a strap?
The <a href="/pages/termine-glossario/misura-ansa">lug width</a> is measured from the inside of the spring bar that connects the strap to the case. In the case of the 231.20.30.20.55.002, position a caliper or flexible ruler between the two attachment points: the value must be 20mm. This parameter is essential to ensure that the new strap fits perfectly without play or excessive tension.
Can I use an aftermarket strap compatible with my Aqua Terra 231.20.30.20.55.002?
Yes, as long as the <a href="/pages/termine-glossario/misura-ansa">lug width</a> is 20mm. Milano Straps artisan straps are manufactured with precise construction tolerances and fittings in steel (and optionally in gold) that guarantee certified compatibility. We recommend always verifying the exact dimensions with the retailer before purchase to avoid incompatibilities with the case lugs.
How long does a leather strap last on a watch worn daily?
Durability depends on the type of leather and degree of exposure: an <a href="/pages/termine-glossario/alligatore">alligator</a> with traditional vegetable tanning lasts on average 4-6 years with regular maintenance and weekly rest; vegetable-tanned calf 3-5 years; rubber and synthetic materials 5-8 years. The 18-month warranty offered by Casati Milano covers manufacturing defects; natural leather wear is considered patina and testifies to the conscious use of the accessory.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only