Strap for Seamaster Aqua Terra 150M Co-Axial 38.5 Stainless Steel / Red Gold / Grey / Bracelet

The Omega Aqua Terra 231.20.39.21.06.003 is equipped with 20mm lug width. This measurement corresponds to the distance between the two case terminals where the strap attaches. Measuring the lug width correctly before purchasing an aftermarket strap is essential to ensure complete compatibility and precise installation.

For an Aqua Terra in rose gold and stainless steel, a black alligator strap represents the most elegant and versatile choice. Alternatively, dark brown calf leather offers greater dynamism with natural patina, while shell cordovan creates a luminosity that enhances the rose gold accents of the case. For sports use, a high-quality rubber strap maintains the Seamaster character without adding weight.

To remove the integrated bracelet and mount a strap, you need to use a dedicated spring bar removal tool or resort to a professional service. Locate the small holes on the case where the lug pins insert, push the pin inward to release the lug, then mount the new strap by operating in reverse. If you are not experienced, we recommend entrusting the operation to a qualified watchmaker.

All 20mm straps are compatible with this Aqua Terra model. Milanostraps offers a wide range of 20mm options: alligator leather, calf, shell cordovan, NATO fabric and FKM rubber. You can customize each strap in sizes, color, stitching thread and add initials to your preference.

The lifespan of a leather strap depends on the type of leather and conditions of use. A quality alligator strap, subjected to vegetable tanning and regularly maintained, can last 3-5 years with daily use. Shell cordovan, due to its intrinsic robustness, tends to last longer. FKM rubber offers a lifespan exceeding 5-7 years thanks to chemical and environmental resistance. Regular maintenance (gentle cleaning and protection from excessive moisture) significantly extends the life of any strap.