Omega · Aqua Terra
Strap for Seamaster Aqua Terra 150M Co-Axial 36.2 Yellow Gold / Black
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 2604.50.37
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 2604.50.37, seen from the bench
Frequently asked questions
What is the lug width of the Omega Aqua Terra 2604.50.37?
The Omega Aqua Terra 2604.50.37 has a lug width of 20mm. This measurement represents the width of the case portion where the strap is attached. Always verify this dimension before purchasing an aftermarket strap to ensure perfect compatibility.
What is the best strap for the Omega Aqua Terra 2604.50.37 in yellow gold?
For a yellow gold Aqua Terra, dark brown alligator with vegetable tanning is ideal for formal occasions, offering an elegant contrast without competing with the precious metal. For more versatile use, vegetable-tanned calf leather provides softness and a patina that evolves over time, enhancing the watch's aesthetics.
How do you change the strap on an Omega Aqua Terra 2604.50.37?
Changing the strap requires a specific tool (spring bar tool) and just a few minutes. Position the watch face down, insert the spring bar tool into the lateral access hole of the lug to compress the spring, gently remove the old strap, and insert the new one while keeping the spring bar compressed. If you are unsure, contact an authorized Omega service center.
Is an aftermarket strap compatible with the Omega Aqua Terra 2604.50.37?
Yes, any strap with a 20mm lug width is compatible with the 2604.50.37. Artisanal straps offer greater flexibility in choosing materials (alligator, shell cordovan, calf), colors and finishes compared to the standard Omega offering, allowing customization that reflects your investment in the precious metal.
How long does a leather strap last on an Omega Aqua Terra?
The lifespan of a leather strap depends on the material and use. Alligator and shell cordovan, when subjected to quality vegetable tanning, maintain structural integrity for 4-6 years with daily wear. Calf leather, being more delicate, requires servicing every 3-4 years. The natural aging of ennobled leather is added character, not deterioration: with proper maintenance and occasional visits to the atelier, longevity extends significantly.
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

