Omega · Aqua Terra

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

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

20mm

20 mm straps All Omega

Lug width20 mm

Case diameter42 mm

Reference231.20.42.21.02.001 (aka: 23120422102001)

FamilyAqua Terra

MovementOmega caliber 8500 hours, minutes, seconds | date | chronometer, co-Axial escapement

Year2014

CaseRed Gold, Stainless Steel

Recommended spring bar

Spring bars Omega 20mm — 1.8mm diameter

Technical match for lug width and diameter · lug 20 mm · Ø 1.8 mm

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Straps for the Aqua Terra 231.20.42.21.02.001 (aka: 23120422102001)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Aqua Terra 231.20.42.21.02.001 (aka: 23120422102001), seen from the bench

The Omega Seamaster Aqua Terra 231.20.42.21.02.001 is a contemporary evolution of the collection launched in 2002 to celebrate Omega's nautical heritage. The 41.50mm stainless steel and rose gold case features a distinctive teak-colored dial with horizontal grooves evoking vintage ship decks. Equipped with the Omega 8500 Co-Axial automatic movement and silicon escapement, it delivers Chronometer-certified precision with 60-hour power reserve. Water-resistant to 150 meters, the 20mm lug width accommodates compatible straps for this balanced sports-elegant design.

Frequently asked questions

What is the lug width of the Omega Aqua Terra 231.20.42.21.02.001?

The Omega Aqua Terra 231.20.42.21.02.001 has a <a href="/pages/termine-glossario/misura-ansa">lug width</a> of 20mm. This dimension is standard for mid-sized Aqua Terra models and allows the use of bespoke straps specifically constructed for this width.

What is the best strap material for this two-tone Aqua Terra?

For a Seamaster Aqua Terra in stainless steel and rose gold, we recommend <a href="/pages/termine-glossario/alligatore">alligator</a> in <a href="/pages/termine-glossario/concia-vegetale">vegetable tanning</a> (black or chocolate brown) or <a href="/pages/termine-glossario/shell-cordovan">shell cordovan</a>. Both enhance the two-tone case without competing with the elegance of the teak dial.

How do I change the strap on my Omega 231.20.42.21.02.001?

The strap is changed by removing the spring bars that connect the strap to the case. Use a spring bar tool to gently press the lateral pin, extract the old strap and insert the new one in the same seats. Ensure that the new strap is compatible with the <a href="/pages/termine-glossario/misura-ansa">lug width</a> of 20mm.

Can I fit an aftermarket strap on my Omega Aqua Terra?

Yes, it is fully compatible. Verify that the strap is constructed for 20mm lug width and has adequate thickness (not less than 4mm) to avoid play in the case lugs. Quality bespoke straps can be used without damaging the watch.

How long does a leather strap last on an Omega Aqua Terra worn daily?

A quality leather strap (alligator, calf, shell cordovan) lasts an average of 2-4 years with daily wear. Durability depends on humidity, cleaning frequency and the <a href="/pages/termine-glossario/concia-vegetale">vegetable tanning</a> used. <a href="/pages/termine-glossario/concia-vegetale">Vegetable tanning</a> ages better and develops patina, while industrial tanning tends to wear more evenly.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only