Omega · Aqua Terra
Strap for Seamaster Aqua Terra 150M Co-Axial 39.2 Stainless Steel / Blue / Bracelet
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Aqua Terra 2503.80.00
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€149
Red Alligator Strap Water Resistant€195
Green Rubberized Alligator Strap with Ecru Tribal Stitching€149
Hammered Calfskin Strap Light Blue€98
Vintage Olive Green Calf Leather Watch Strap€80
The Aqua Terra 2503.80.00, seen from the bench
Frequently asked questions
What is the lug width of the Omega Aqua Terra 2503.80.00?
The Omega Aqua Terra 2503.80.00 features a lug width of 20 millimeters, an established standard for sports watches in this category. This width ensures complete compatibility with the extensive range of artisanal straps available at Milano Straps, crafted specifically for this measurement.
What is the best strap for the Omega Aqua Terra 2503.80.00?
Genuine alligator represents the ideal choice for the 2503.80.00, thanks to its geometric grain that naturally complements the austere aesthetic of the satin-finished steel case. Alternatively, vegetable-tanned calf offers immediate softness, while shell cordovan is perfect for those seeking durability and an evolving patina over time.
How do you properly change the strap on this watch?
The change is straightforward: use a spring bar tool to release the spring bars from the case lugs. After removing the previous strap, insert the new spring bars into the holes and secure with firm pressure until they click into place. Verify that the strap is properly centered before wearing the watch.
Are aftermarket straps compatible with the Omega Aqua Terra 2503.80.00?
Yes, entirely. The 2503.80.00 features conventional spring bar attachments and a standard lug width of 20 millimeters. Artisanal straps from Milano Straps are fully compatible, allowing you to easily alternate between different leather solutions and textures.
How long does a leather strap last on this watch?
A quality artisanal strap, with structured leather and robust stitching, guarantees durability of 3-4 years of daily use. Longevity depends on the tanning method (vegetable vs. industrial), exposure to moisture and sunlight, and maintenance frequency. Casati Milano straps include an 18-month warranty.
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

