Strap for Seamaster Aqua Terra 150M Master Co-Axial 34 Sedna Gold / Diamond / MOP / Bracelet

The Omega Aqua Terra 231.55.34.20.55.003 has a lug width of exactly 20 millimetres. This lug width is specific to this model and requires straps designed specifically for the 20mm size. To verify compatibility, measure the internal distance between the two lugs on the case: it must correspond to 20 mm. Straps of 19 or 21 mm will cause abnormal tension.

Premium alligator is the choice that best enhances Sedna Gold, thanks to its tight and uniform grain that harmonizes with the lustre of rose gold. Vegetable-tanned alligator in dark brown or aged cognac tones offers aesthetic versatility and longevity. Refined alternatives include natural shell cordovan for dramatic contrast, or vegetable-tanned calf in light tones for a summer approach. The choice depends on your style and intended use.

The Omega Aqua Terra 231.55.34.20.55.003 uses proprietary Omega spring bar attachments. To remove the strap, you have two options: use a spring bar tool (a small instrument with a hook) to compress the spring and release the tension, or consult a watchmaker to avoid scratching risks. Make sure the new strap is sized exactly at 20 mm lug width. Once the strap is positioned, verify that the attachments are firmly secured and that there is no lateral play.

Yes, it is possible to use quality aftermarket straps provided they are compatible with the 20 mm lug width and standard Omega spring bar attachments. Choose specialized manufacturers that guarantee precise tolerances and noble materials (alligator, cordovan, vegetable-tanned calf): this preserves the aesthetic value of the watch and ensures comfort and durability. Avoid generic straps or approximate custom-made ones, which carry risks of incompatibility.

A high-quality natural leather strap (vegetable-tanned alligator, shell cordovan, vegetable-tanned calf) has an average lifespan of 3-5 years with daily use and ordinary maintenance. Natural aging, in this case, is added value: the leather develops patina and character over time. To extend its life, avoid prolonged exposure to water and humidity, gently clean with a soft cloth, and occasionally apply specific leather balms. A well-preserved strap can last beyond 5 years.