Omega · Aqua Terra
Strap for Seamaster Aqua Terra 150M Co-Axial 34 Stainless Steel / Ryder Cup / 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 231.10.34.20.55.003
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€210
Black Alligator Strap with White Edges€210
Millenium Cognac Alligator Strap€270
Matte Blue Alligator Strap€270
Green Rubberized Alligator Strap with Ecru Tribal Stitching€185
The Aqua Terra 231.10.34.20.55.003, seen from the bench
Frequently asked questions
What is the exact lug width of the Omega Aqua Terra 231.10.34.20.55.003?
The lug width is 20mm. This measurement must be taken with a caliper by measuring the distance between the two case attachment pins. It is essential to verify this measurement before purchasing a strap to ensure complete compatibility and the absence of play.
What strap material is recommended for the Omega Aqua Terra 231.10.34.20.55.003?
Alligator represents the ultimate dress choice, thanks to its defined grain and water resistance. Vegetable-tanned calf offers versatility and a patina that ages deliberately. Shell cordovan guarantees unique color density but requires greater maintenance. For intense sports use, structured rubber is the most practical solution.
How do I change the strap on my Omega Aqua Terra 231.10.34.20.55.003?
Strap replacement requires a small spring bar tool. Remove the current strap by compressing the two side pins with the tool until they retract, then extract the strap. Insert the new strap by aligning the holes with the pins and press until you hear the locking click. If you are unsure, contact Casati Milano for professional assistance.
Can I use an aftermarket strap on this Omega?
Yes, any strap with a lug width of 20mm is compatible. It is essential that the strap is constructed with a double pin to ensure proper fit in the case supports. Milano Straps offers a complete range of aftermarket straps in leather, fabric and rubber, all tested for compatibility on this model.
How long does a leather strap last on the Omega Aqua Terra 231.10.34.20.55.003?
Durability depends on intensity of use and maintenance. A quality alligator strap can last 5-7 years with regular use and preventive care. Vegetable-tanned calf has a similar lifespan but develops a visible patina over time. Frequent water exposure shortens strap life; for intense marine environments, consider structured rubber. Casati Milano provides an 18-month warranty on all bespoke straps.
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

