Strap for Transocean 38 Stainless Steel / Silver / Bracelet

The lug width of the Breitling Transocean A1631012/G781/171A is 20mm. This measurement should be taken with a digital calliper directly between the lugs, in contact with the steel case, to ensure millimetre-precise compatibility with any replacement strap.

For the Transocean A1631012/G781/171A, the materials most coherent with the aesthetic of the 38mm brushed steel case are vegetable-tanned alligator — for its patina over time and refined grain — box calf leather for formal daily wear, and vulcanised rubber for sporting contexts. Colour choice depends on the dial: burgundy or midnight blue with a black dial, cognac or honey with a light dial.

To replace the strap on the Transocean A1631012/G781/171A, you will need a fine-tipped springbar tool. Compress the spring bar internally and slide the strap out from the lug. Take care not to scratch the brushed case finishing: applying PTFE tape around the bezel during the operation is recommended. The replacement strap must measure exactly 20mm at the lug width.

Yes. Any strap with a 20mm lug width and spring bars compatible with a medium case thickness is technically mountable on the Transocean A1631012/G781/171A. Milanostraps.it offers a curated selection of handcrafted 20mm straps, available both online and bespoke through the Casati Milano atelier.

The lifespan of a leather strap depends on the material, tanning method and frequency of use. A vegetable-tanned alligator strap, properly maintained (conditioning cream every 3–4 months, kept away from water), typically lasts 3–5 years of regular wear. Cordovan and box calf behave similarly. Chrome-tanned leathers tend to stiffen more rapidly. The Casati Milano warranty covers manufacturing defects for 18 months.