Omega · Aqua Terra

Strap for Seamaster Aqua Terra 150M Co-Axial 44 GMT Chronograph Stainless Steel / Silver

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

Lug width20 mm
Case diameter44 mm
Reference231.13.44.52.04.001 (aka: 23113445204001)
FamilyAqua Terra
MovementOmega caliber 3603 hours, minutes, small seconds, Additional 24 hours Hand (adjustable) | date | Chronograph, column wheel | co-Axial escapement
CaseStainless 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

All Omega spring barsOpen →

Straps for the Aqua Terra 231.13.44.52.04.001 (aka: 23113445204001)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Aqua Terra 231.13.44.52.04.001 (aka: 23113445204001), seen from the bench

The Aqua Terra mounts the Omega 3603 automatic caliber with Co-Axial escapement, column-wheel chronograph function and adjustable GMT hand. The movement offers indication of hours, minutes, small seconds, date and a second time zone through the additional 24-hour hand. The case features a stainless steel construction with integrated crown and chronograph pushers in the Seamaster collection design.

Frequently asked questions

What is the lug width of the Omega Aqua Terra 231.13.44.52.04.001?

The lug width of the Omega Aqua Terra 231.13.44.52.04.001 is 20mm. This width is standard for 44mm case watches and should be verified by measuring the distance between the terminals (case-to-strap junction points) with a digital caliper. All straps built to 20mm watchmaking specifications are compatible with this model.

Which strap material is best suited for my Omega Aqua Terra 231.13.44.52.04.001?

The choice depends on intended use and dial color. Natural grain alligator offers sophistication and develops an elegant patina over time. Shell cordovan ensures natural luster and crease resistance. Calf leather is ideal for a more formal appearance. For a conscious sportive aesthetic, a NATO or vulcanized natural rubber strap maintains the nautical character without compromise.

How do I change the strap on the Omega Aqua Terra 231.13.44.52.04.001?

To change the strap, use a dedicated tool or a small metal lever to push the spring bars through the case lugs. The terminals of the new strap must slide smoothly into the case's connection channels without forcing. Avoid direct contact with the leather strap during the operation: wear cotton gloves to preserve the patina and natural finishes.

Can I use aftermarket straps (non-Omega) on my Aqua Terra 231.13.44.52.04.001?

Yes, any strap built to 20mm watchmaking standards is compatible. Artisanal straps are often superior to OEM straps in terms of leather quality and customization options (initials, stitching color, custom length). Verify that the strap has a spring bar of the correct gauge and that the terminals fit perfectly into the case lugs.

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

A high-quality artisanal leather strap typically lasts 5-7 years of daily wear, developing an elegant patina over time. Longevity depends on tanning method (vegetable tanning is more durable than chrome tanning), leather type (shell cordovan outlasts delicate calf), and care. Protecting the leather from salt water, excessive perspiration, and prolonged humidity will significantly extend the strap's lifespan.

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