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

The lug width of the Omega Aqua Terra 231.10.39.21.57.001 is 18mm. This measurement is critical to ensure full strap compatibility with the case lugs: an undersized strap will not adhere properly to the shoulders, while an oversized strap creates wear marks on the case. Milano Straps produces all straps with this measurement in compliance with Omega specifications.

For the Omega Aqua Terra 231.10.39.21.57.001, we recommend a calf or alligator strap with satin finish: Italian vegetable-tanned calf emphasizes the sobriety of the steel case and ages by developing a unique patina, while alligator adds structure thanks to the natural grain of the leather. A steel deployant clasp ensures secure closure and subtle wrist comfort during temperature variations.

The strap is removed using a spring bar tool to extract the pins from the case lugs. Insert the tool into the tiny hole along the pin, flex the spring slightly, and remove the pin by pulling it laterally. Replace the strap by positioning the new pin (pre-mounted on the Milano Straps strap) and press until it clicks into place. The operation takes 2-3 minutes and requires no technical skill: however, Casati Milano offers the replacement service at the atelier for those who prefer direct assistance.

Yes, fully compatible. The Omega Aqua Terra 231.10.39.21.57.001 uses standard pins: any strap with 18mm lug width is mechanically compatible. Milano Straps provides artisanal straps that exceed factory standards in terms of material selection and finishing, guaranteeing 18 months durability and customization options in sizing, initials, and stitching thread.

A quality artisanal leather strap, worn daily, has an average lifespan of 3-4 years before wear requires replacement. Factors such as relative humidity, direct sun exposure, and frequency of use accelerate the natural aging of leather. A Milano Straps strap in vegetable tanning develops patina and character over time, aging aesthetically. Milano Straps offers an 18-month warranty and replacement kits at reduced price for those wishing to further extend the functional life of the strap.