Omega · Aqua Terra

Strap for Seamaster Aqua Terra 150M Co-Axial 34 Red Gold / Diamond / MOP

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

Lug width20 mm
Case diameter34 mm
Reference231.58.34.20.55.002 (aka: 23158342055002)
FamilyAqua Terra
MovementOmega caliber 8521 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 231.58.34.20.55.002 (aka: 23158342055002)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Aqua Terra 231.58.34.20.55.002 (aka: 23158342055002), seen from the bench

The Aqua Terra is part of Omega's Seamaster collection and represents the brand's sporty-elegant line. It features the automatic 8521 caliber with co-axial escapement and chronometer certification, equipped with hour, minute, second and date functions. The reference 231.58.34.20.55.002 has a 34mm case according to the standard specifications of the collection.

Frequently asked questions

What is the lug width of the Omega Aqua Terra 231.58.34.20.55.002?

The lug width of the Omega Aqua Terra 231.58.34.20.55.002 is 20mm. This measurement is crucial for purchasing compatible straps and must be verified by measuring the space between the two case terminals, exactly where the spring bars find their housing.

What strap material is ideal for the 231.58.34.20.55.002 in Red Gold?

For the Omega Aqua Terra 231.58.34.20.55.002 in Red Gold, alligator in dark brown shades is recommended for classic elegance, vegetable-tanned calf leather (cognac or burgundy) for a patina that matures over time, or shell cordovan for maximum tactile complexity. Structured rubber remains the ideal choice for sporty and everyday contexts.

How do you replace the strap on the Omega Aqua Terra 231.58.34.20.55.002?

Strap replacement requires extracting the spring bars from the case lugs using a dedicated tool (strap remover). After gently disengaging the terminals, remove the previous strap and insert the new one, ensuring the spring bars are perfectly housed. For correct execution, it is recommended to entrust the operation to an expert, especially on valuable timepieces.

Which aftermarket straps are compatible with the 231.58.34.20.55.002?

Only straps with a 20mm lug width are compatible. Artisanal suppliers such as Milano Straps offer custom straps in alligator, calf, shell cordovan, and rubber, all specifically constructed with this measurement. Universal or incorrectly sized straps (18mm, 22mm) will not fit properly.

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

A quality leather strap (alligator, calf, or shell cordovan) has an average lifespan of 4-8 years, depending on daily use, sun exposure, and climate. Vegetable-tanned leather maturation develops gradually over time. A quality vulcanized rubber strap typically lasts 5-10 years. Regular maintenance (gentle cleaning and conditioning) significantly extends longevity.

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