Omega · Aqua Terra

Strap for Seamaster Aqua Terra 150M Co-Axial 36.2 Yellow Gold / Black / Bracelet

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

Lug width20 mm
Case diameter36 mm
Reference2104.50.00
FamilyAqua Terra
MovementOmega caliber 2500 hours, minutes, seconds | date | co-Axial escapement, chronometer
Year2002
CaseYellow 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 2104.50.00

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Aqua Terra 2104.50.00, seen from the bench

The Omega Aqua Terra 2104.50.00 is a dress-sport watch with a 36.2mm yellow gold case and Co-Axial movement (Omega caliber 2500). Launched in the mid-1990s, it features a grey-blue dial, date window, and water resistance to 300 metres. The 20mm lug width reflects ergonomic proportions designed for this case diameter, measured centre-to-centre between spring bar pins.

Frequently asked questions

What is the lug width of the Omega Aqua Terra 2104.50.00?

The lug width of the 2104.50.00 is 20mm, measured from the center of one pin to the center of the other pin. This dimension is standard for this model and allows the use of most aftermarket straps available on the market.

Which strap material pairs best with the Omega Aqua Terra 2104.50.00 in yellow gold?

Vegetable-tanned alligator represents the most natural choice for the 2104.50.00 in yellow gold, as the texture of the leather dialogues perfectly with the watch's surface. Japanese shell cordovan and Italian calf are excellent alternatives for those seeking a patina that ages magnificently over time.

How do I change the strap on my Omega Aqua Terra 2104.50.00?

The strap is changed using a tool called a spring bar tool, which allows you to push the small elastic pins (spring bars) inward. Once the pins are removed, the old strap detaches and the new strap can be fitted. If you are not experienced, the Casati Milano atelier performs this operation by appointment with the utmost care.

Can I use a quality aftermarket strap on an Omega Aqua Terra 2104.50.00?

Absolutely. A high-quality aftermarket strap in alligator or calf with a 20mm lug width is completely compatible with the 2104.50.00. Milano Straps offers a selection of handcrafted straps made by master craftsmen that fully meet the quality standards of an Omega watch.

How long does a leather strap typically last on an Omega Aqua Terra 2104.50.00?

The durability depends on usage and leather quality. A high-quality vegetable-tanned alligator or calf strap maintains its aesthetic and functional characteristics for 5-7 years with moderate daily use. Factors such as sun exposure, humidity, and perspiration influence the natural aging of the leather, which nonetheless develops a prized patina over time.

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