Strap for Seamaster Aqua Terra 150M Co-Axial 38.5 Annual Calendar Red Gold / Silver

The lug width of the 231.53.39.22.02.001 is 20 millimetres. This measurement refers to the distance between the two lugs that protrude from the case: always measure between these two points, not the entire case. A 20mm strap ensures the aesthetic continuity that characterises the Aqua Terra architecture.

Alligator in cognac or honey tones creates the most sophisticated chromatic contrast with rose gold. If you prefer practicality and durability, Japanese shell cordovan ages magnificently and develops bordeaux hues that remain harmonious with gold. Vegetable-tanned black calf leather remains the most versatile choice for daily wear in every season.

The Aqua Terra uses a standard spring bar system: the strap is removed by gently pushing the lateral lugs from the case with a dedicated tool (Spring Bar Tool). The lugs slide easily if the operation is performed perpendicularly to the lug. The Casati Milano atelier offers complimentary installation service with 18-month warranty on all commissioned straps.

All straps with 20mm lug width are compatible. Our <a href="https://milanostraps.it/collections/cinturini-orologi-per-misura-ansa-20mm">20mm straps</a> are crafted with anatomical curves that respect the Omega case profile, in premium materials such as alligator, shell cordovan and vegetable-tanned calf. Each strap is customisable in length and finish.

A premium leather strap (alligator or shell cordovan) typically lasts 3-5 years with daily wear and proper maintenance. Durability depends on climate (humidity, sunlight), frequency of use and care: avoid prolonged water exposure and occasionally apply natural wax to significantly extend lifespan. The Casati Milano atelier provides 18-month warranty on all artisanal straps and recommends periodic regeneration treatments.