Omega · Aqua Terra

Strap for Seamaster Aqua Terra 150M Co-Axial 42.2 Stainless Steel / White / 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 diameter42 mm
Reference2502.33.00
FamilyAqua Terra
MovementOmega caliber 2500 hours, minutes, seconds | date | co-Axial escapement, chronometer
Year2003
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 2502.33.00

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Aqua Terra 2502.33.00, seen from the bench

The Aqua Terra Reference 2502.33.00 is equipped with the Omega 2500 calibre with co-axial escapement and chronometer certification. The automatic movement indicates hours, minutes, seconds and date. The watch is part of the Seamaster collection and is equipped with the co-axial technology developed by Omega.

Frequently asked questions

What is the exact lug width of the Omega Aqua Terra 2502.33.00?

The Omega Aqua Terra 2502.33.00 mounted on a 42.20mm case requires a strap with a lug width of 20mm. This measurement is standard for sports watches of this size and matches the width of the integrated original Omega bracelet. You can verify it by measuring the width of the lug (the connection point between strap and case) with a caliper or ruler.

Which strap is most suitable for the Omega Aqua Terra 2502.33.00?

The ideal strap depends on your intended use. For formal elegance, alligator in cognac or dark blue tones enhances the Aqua Terra's sobriety and pairs naturally with the steel case. If you plan to use it frequently in marine environments, matte black or grey FKM rubber offers water resistance, quick drying, and minimal maintenance requirements. Vegetable-tanned calfskin represents the ideal compromise between aesthetics and practicality, developing a fascinating patina over time while maintaining structural robustness.

How do you change the strap on an Omega Aqua Terra 2502.33.00?

Strap replacement involves removing the spring bars (pins) that connect the strap to the lugs. Use a dedicated tool (spring bar tool) to depress the internal spring of the pin and slide it out. Since the Aqua Terra is a valuable timepiece, we recommend entrusting this operation to a qualified watchmaker or the Casati Milano atelier, which guarantees precision and prevents case scratching. The procedure takes 10-15 minutes.

Is there an aftermarket strap compatible with the 2502.33.00?

Yes, absolutely. The 20mm lug width is standard on the international artisanal market and milanostraps.it offers a selection of customizable straps ready for shipment. You can choose from different leathers (alligator, calfskin, shell cordovan), colors, stitch finishes, and lengths. The Casati Milano atelier also offers bespoke straps, custom-made with your choice of leather and an 18-month warranty.

What is the average lifespan of a leather strap for the Omega Aqua Terra 2502.33.00?

A quality leather strap (alligator, vegetable-tanned calfskin) has an average lifespan of 3-5 years if exposed to regular marine humidity, up to 8-10 years in predominantly dry environments. Vegetable-tanned leather ages elegantly, developing patina, while shell cordovan maintains its luster longer but requires protection from salt water. FKM rubber or silicone straps offer superior durability (7-12 years) without aesthetic changes. Periodic maintenance (cleaning, conditioning) significantly extends the useful life of any strap.

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