Strap for Seamaster Aqua Terra 150M Co-Axial 30 White Gold / Diamond / Diamond / Bracelet

The Omega Aqua Terra 231.55.30.20.99.002 has a lug width of exactly 20mm. This dimension is critical for strap compatibility: any variation, even 0.5mm, would result in an unsuitable strap. To verify it with precision, remove the original strap and measure the internal distance between the two lugs of the case with a digital caliper.

The best strap depends on usage: for daily elegance, a cognac or tobacco brown alligator strap enhances the teak dial without chromatic competition. For formality, a black calf or pure black alligator introduces sophisticated contrast. For sporty versatility, a natural leather shell cordovan or ballistic NATO maintains the technical character. Your choice should resonate with your intended context of use and the patina you wish to develop over time.

The Omega Aqua Terra 231.55.30.20.99.002 uses traditional spring bars (the rectangular spaces in the case where the strap lugs are inserted). To change the strap: 1) obtain a spring bar tool (small instrument with two metal tips), 2) insert the tips into the small lateral slots of the lug, 3) pull the lug outward while pushing the center button, 4) remove the old strap, 5) insert the new strap and reinsert the spring bar. If you are not experienced, entrust the task to Casati Milano or an Omega service center to avoid damaging the case.

Yes, provided the strap is of artisanal quality with lug width confirmed at 20mm. Aftermarket straps from Milano Straps are specifically constructed for this width and guarantee total compatibility without tolerance compromise. Avoid low-quality generic straps: the 231.55.30.20.99.002 deserves noble materials (alligator, shell cordovan, calf) that enhance the technical heritage of the Aqua Terra.

A high-quality artisanal leather strap (alligator, calf, shell cordovan) lasts an average of 3-5 years with moderate daily use, extendable to 10 years if alternated with rest days. Longevity depends on: environmental humidity, sun exposure, frequency of wear, cleaning care and conditioning. Shell cordovan, if properly maintained, exceeds 15 years. Milano Straps provides an 18-month warranty and can perform regeneration and reconditioning services at Casati Milano.