Omega · Aqua Terra

Strap for Seamaster Aqua Terra 150M Co-Axial 38.5 Red Gold / Grey

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

Lug width20 mm
Case diameter39 mm
Reference231.53.39.21.06.001 (aka: 23153392106001)
FamilyAqua Terra
MovementOmega caliber 8501 hours, minutes, seconds | date | chronometer, co-Axial escapement
CaseRed Gold

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 231.53.39.21.06.001 (aka: 23153392106001)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Aqua Terra 231.53.39.21.06.001 (aka: 23153392106001), seen from the bench

The Aqua Terra represents Omega's sporty-elegant collection, equipped with the automatic caliber 8501 with Co-Axial escapement. The movement offers hours, minutes, seconds and date functions, with chronometer certification. The reference 231.53.39.21.06.001 identifies this specific configuration of the line.

Frequently asked questions

What is the lug width of the Omega Aqua Terra 231.53.39.21.06.001?

The Omega Aqua Terra 231.53.39.21.06.001 has a lug width of 20 mm. This dimension is standard for this model and must be respected with precision when purchasing alternative straps, measuring from the inside of one lug to the inside of the other attachment point on the case.

Which strap pairs best with the Red Gold Aqua Terra?

For the Red Gold Aqua Terra 231.53.39.21.06.001, we recommend straps in dark brown alligator, vegetable-tanned calf in golden hues, or shell cordovan. These materials create a warm and sophisticated aesthetic dialogue with the precious metal, respecting the formal elegance of the watch.

How do you change the strap on this Aqua Terra?

To change the strap, use a spring bar tool to gently disconnect the terminal tube from the lug at both attachment points. Remember that the lug width is 20 mm: the new strap must fit perfectly to this width to ensure security and visual harmony.

Can I mount an aftermarket strap on this Omega?

Yes, quality artisanal aftermarket straps are fully compatible with the Aqua Terra 231.53.39.21.06.001, provided they have a lug width of 20 mm. Milano Straps offers a selection of 20 mm straps in various premium leathers, customizable according to your aesthetic and color preferences.

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

A quality leather strap, particularly in alligator or shell cordovan, can last 3-5 years of moderate daily wear. Longevity depends on the tanning method (vegetable-tanned ages better), sun and humidity exposure, and maintenance frequency. Milano Straps offers an 18-month warranty on made-to-measure straps and support for long-term preservation.

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