Strap for Transocean 38 Stainless Steel / MOP / Bracelet

The lug width of the Breitling Transocean A1631012/A764/171A is 20mm. This measurement is taken with a digital calliper positioned between the two lugs, flush against the case bezel, and determines compatibility with any aftermarket or replacement strap.

For the Transocean A1631012/A764/171A, with its 38mm case and dress-watch character, a vegetable-tanned alligator strap is the most coherent choice. Alternatively, a soft-grain calf leather or a NATO strap for everyday wear are well-proportioned and appropriate options for this case size.

To replace the strap, use a fine-tipped spring bar tool or a lever-style instrument to remove the spring bars from the lugs. Work on a soft surface to avoid scratching the case. The replacement strap must have a 20mm attachment width. If in doubt, a watchmaker or the Casati Milano atelier can complete the swap in minutes.

Yes. Any strap with a 20mm lug width is dimensionally compatible with the Breitling Transocean A1631012/A764/171A. Milanostraps.it offers a curated selection of handcrafted straps in various materials — alligator, calf leather, shell cordovan, NATO — designed to suit both the lug geometry and the formal aesthetic of this reference.

Longevity depends on the material and daily use. A quality vegetable-tanned calf strap typically lasts 2–3 years with standard care. A hand-stitched alligator strap, kept away from prolonged moisture and treated with a leather conditioner, can last 5 years or more. Casati Milano straps come with an 18-month manufacturing warranty.