Breitling
Transocean A1631012/G781/171A— lug 20mm
Breitling Transocean A1631012/G781/171A: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 20mm lug width to preserve the original sartorial balance."
Technical Specifications
Breitling A1631012/G781/171AThe essential strap measurement.
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Breitling caliber Caliber B16 Hours, Minutes, Small Seconds | Big Date
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Selected for the 20mm lug width of the Transocean
FAQ
What is the lug width of the Breitling Transocean A1631012/G781/171A?
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.
What is the best strap for the Breitling Transocean A1631012/G781/171A?
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.
How do I change the strap on the Breitling Transocean A1631012/G781/171A?
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.
Are there aftermarket straps compatible with the Breitling Transocean A1631012/G781/171A?
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.
How long does a leather strap last on a Breitling Transocean A1631012/G781/171A?
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.