Strap for Seamaster Aqua Terra 150M Co-Axial 30 Stainless Steel / Yellow Gold / MOP

The lug width of the Omega Aqua Terra 231.23.30.20.55.002 is 20mm. This specific width, engineered by Omega to maintain optimal proportions on a 30mm case, requires dedicated straps. It is measured by positioning a digital caliper on the case lugs, corresponding to the attachment holes: the internal distance between the two edges must correspond to exactly 20mm.

The ideal strap depends on intended use: alligator in black or brown conveys formal elegance, enhancing the mother-of-pearl dial. Shell cordovan with vegetable tanning develops a caramelized patina over time and pairs magnificently with yellow gold. For a sporty approach, vulcanized rubber Tropic maintains the aquatic vocation. A NATO in linen or heavy cotton offers informality without sacrificing wearability. Cognac-colored calf leather creates chromatic harmony without competing with the dial.

To change the strap, extract the spring bars connecting the strap to the case. Use a dedicated tool, a watchmaker's knife, or a spring bar remover to apply gentle pressure to the spring bar until it disengages. Then slide the new 20mm strap into the attachments, ensuring that the spring bars lock correctly in the holes. Verify that the strap has no lateral play before wearing the watch.

Any strap with a 20mm lug width is compatible with the Omega Aqua Terra 231.23.30.20.55.002. However, to guarantee construction quality and durability, we recommend straps in alligator, vegetable-tanned calf, shell cordovan, or vulcanized rubber from certified sources. Always verify that the strap thickness does not exceed 4-5mm to avoid excessive play in the attachments.

The durability of a leather strap depends on material and usage. Vegetable-tanned calf typically lasts 3-5 years with regular maintenance. Shell cordovan, thanks to its natural density, can last 5-8 years or longer, developing an appreciated patina. High-quality alligator reaches 4-6 years. Vulcanized rubber offers superior resistance, lasting 7-10 years. To extend strap life, apply protective balms every 6 months and avoid prolonged exposure to intense humidity.